diff --git a/src/header/_aio/cbindgen.toml b/src/header/_aio/cbindgen.toml
index f7e9c7085c..fd387cb50e 100644
--- a/src/header/_aio/cbindgen.toml
+++ b/src/header/_aio/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_AIO_H"
+include_guard = "_RELIBC_AIO_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/_fenv/cbindgen.toml b/src/header/_fenv/cbindgen.toml
index dc3df6a78a..e8ca9b12ad 100644
--- a/src/header/_fenv/cbindgen.toml
+++ b/src/header/_fenv/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stdint.h", "sys/types.h"]
-include_guard = "_FENV_H"
+include_guard = "_RELIBC_FENV_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/_template/cbindgen.toml b/src/header/_template/cbindgen.toml
index 6eb7533937..fbdebd78fd 100644
--- a/src/header/_template/cbindgen.toml
+++ b/src/header/_template/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_TEMPLATE_H"
+include_guard = "_RELIBC_TEMPLATE_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/_wctype/cbindgen.toml b/src/header/_wctype/cbindgen.toml
index 57aab6a402..9477e2aa38 100644
--- a/src/header/_wctype/cbindgen.toml
+++ b/src/header/_wctype/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_WCTYPE_H"
+include_guard = "_RELIBC_WCTYPE_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/assert/cbindgen.toml b/src/header/assert/cbindgen.toml
index eec2bfb141..7d1598f414 100644
--- a/src/header/assert/cbindgen.toml
+++ b/src/header/assert/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["bits/assert.h"]
-include_guard = "_ASSERT_H"
+include_guard = "_RELIBC_ASSERT_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/ctype/cbindgen.toml b/src/header/ctype/cbindgen.toml
index ff4f1d59d1..f47026b46c 100644
--- a/src/header/ctype/cbindgen.toml
+++ b/src/header/ctype/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["bits/ctype.h"]
-include_guard = "_CTYPE_H"
+include_guard = "_RELIBC_CTYPE_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/dirent/cbindgen.toml b/src/header/dirent/cbindgen.toml
index 252f91ffe9..5ba9d76a14 100644
--- a/src/header/dirent/cbindgen.toml
+++ b/src/header/dirent/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["sys/types.h"]
-include_guard = "_DIRENT_H"
+include_guard = "_RELIBC_DIRENT_H"
 language = "C"
 style = "Both"
 trailer = "#include <bits/dirent.h>"
diff --git a/src/header/dlfcn/cbindgen.toml b/src/header/dlfcn/cbindgen.toml
index 7e00f6ecdc..3a324bd8cb 100644
--- a/src/header/dlfcn/cbindgen.toml
+++ b/src/header/dlfcn/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_DLFCN_H"
+include_guard = "_RELIBC_DLFCN_H"
 language = "C"
 style = "Type"
 no_includes = true
diff --git a/src/header/errno/cbindgen.toml b/src/header/errno/cbindgen.toml
index 97769954d3..7de26bfdf8 100644
--- a/src/header/errno/cbindgen.toml
+++ b/src/header/errno/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["bits/errno.h"]
-include_guard = "_ERRNO_H"
+include_guard = "_RELIBC_ERRNO_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/fcntl/cbindgen.toml b/src/header/fcntl/cbindgen.toml
index 28019aeebb..40377c713a 100644
--- a/src/header/fcntl/cbindgen.toml
+++ b/src/header/fcntl/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stdarg.h", "sys/types.h"]
-include_guard = "_FCNTL_H"
+include_guard = "_RELIBC_FCNTL_H"
 trailer = "#include <bits/fcntl.h>"
 language = "C"
 style = "Tag"
diff --git a/src/header/float/cbindgen.toml b/src/header/float/cbindgen.toml
index 976cd7b879..4ca9cc2ea7 100644
--- a/src/header/float/cbindgen.toml
+++ b/src/header/float/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["sys/types.h", "bits/float.h"]
-include_guard = "_FLOAT_H"
+include_guard = "_RELIBC_FLOAT_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/fnmatch/cbindgen.toml b/src/header/fnmatch/cbindgen.toml
index 1acf898cf0..c5cb5babab 100644
--- a/src/header/fnmatch/cbindgen.toml
+++ b/src/header/fnmatch/cbindgen.toml
@@ -1,4 +1,4 @@
-include_guard = "_FNMATCH_H"
+include_guard = "_RELIBC_FNMATCH_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/getopt/cbindgen.toml b/src/header/getopt/cbindgen.toml
index 3d74bd500e..36e260094b 100644
--- a/src/header/getopt/cbindgen.toml
+++ b/src/header/getopt/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["unistd.h"]
-include_guard = "_GETOPT_H"
+include_guard = "_RELIBC_GETOPT_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/grp/cbindgen.toml b/src/header/grp/cbindgen.toml
index 8db7bd7da2..4a2e9f2cf0 100644
--- a/src/header/grp/cbindgen.toml
+++ b/src/header/grp/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_GRP_H"
+include_guard = "_RELIBC_GRP_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/inttypes/cbindgen.toml b/src/header/inttypes/cbindgen.toml
index 81e458051f..f923cb6804 100644
--- a/src/header/inttypes/cbindgen.toml
+++ b/src/header/inttypes/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stdint.h", "wchar.h"]
-include_guard = "_INTTYPES_H"
+include_guard = "_RELIBC_INTTYPES_H"
 trailer = "#include <bits/inttypes.h>"
 language = "C"
 style = "Type"
diff --git a/src/header/libgen/cbindgen.toml b/src/header/libgen/cbindgen.toml
index b407f8cc16..50d050350e 100644
--- a/src/header/libgen/cbindgen.toml
+++ b/src/header/libgen/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_LIBGEN_H"
+include_guard = "_RELIBC_LIBGEN_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/limits/cbindgen.toml b/src/header/limits/cbindgen.toml
index a35e1404eb..df8b0b0469 100644
--- a/src/header/limits/cbindgen.toml
+++ b/src/header/limits/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_LIMITS_H"
+include_guard = "_RELIBC_LIMITS_H"
 trailer = "#include <bits/limits.h>"
 language = "C"
 style = "Tag"
diff --git a/src/header/locale/cbindgen.toml b/src/header/locale/cbindgen.toml
index 2a7072bb21..edb2300b9c 100644
--- a/src/header/locale/cbindgen.toml
+++ b/src/header/locale/cbindgen.toml
@@ -1,4 +1,4 @@
-include_guard = "_LOCALE_H"
+include_guard = "_RELIBC_LOCALE_H"
 trailer = "#include <bits/locale.h>"
 language = "C"
 style = "Tag"
diff --git a/src/header/netdb/cbindgen.toml b/src/header/netdb/cbindgen.toml
index fdbf6fa894..b4332479d2 100644
--- a/src/header/netdb/cbindgen.toml
+++ b/src/header/netdb/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["sys/socket.h", "netinet/in.h"]
-include_guard = "_NETDB_H"
+include_guard = "_RELIBC_NETDB_H"
 trailer = "#include <bits/netdb.h>"
 language = "C"
 style = "Tag"
diff --git a/src/header/poll/cbindgen.toml b/src/header/poll/cbindgen.toml
index db04f56cee..ac981e6ad1 100644
--- a/src/header/poll/cbindgen.toml
+++ b/src/header/poll/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_POLL_H"
+include_guard = "_RELIBC_POLL_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/pwd/cbindgen.toml b/src/header/pwd/cbindgen.toml
index bce631e414..55d0cdf99c 100644
--- a/src/header/pwd/cbindgen.toml
+++ b/src/header/pwd/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "sys/types.h"]
-include_guard = "_PWD_H"
+include_guard = "_RELIBC_PWD_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/regex/cbindgen.toml b/src/header/regex/cbindgen.toml
index 550385cdb2..78dfc8ee0d 100644
--- a/src/header/regex/cbindgen.toml
+++ b/src/header/regex/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["sys/types.h"]
-include_guard = "_REGEX_H"
+include_guard = "_RELIBC_REGEX_H"
 language = "C"
 style = "Type"
 no_includes = true
diff --git a/src/header/semaphore/cbindgen.toml b/src/header/semaphore/cbindgen.toml
index 8514bfba07..0c01194989 100644
--- a/src/header/semaphore/cbindgen.toml
+++ b/src/header/semaphore/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_SEMAPHORE_H"
+include_guard = "_RELIBC_SEMAPHORE_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/sgtty/cbindgen.toml b/src/header/sgtty/cbindgen.toml
index f6f653d6f5..f566f920ee 100644
--- a/src/header/sgtty/cbindgen.toml
+++ b/src/header/sgtty/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["sys/ioctl.h"]
-include_guard = "_SGTTY_H"
+include_guard = "_RELIBC_SGTTY_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/signal/cbindgen.toml b/src/header/signal/cbindgen.toml
index 73a7c9e417..46bbe11352 100644
--- a/src/header/signal/cbindgen.toml
+++ b/src/header/signal/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stdint.h", "sys/types.h"]
-include_guard = "_SIGNAL_H"
+include_guard = "_RELIBC_SIGNAL_H"
 trailer = "#include <bits/signal.h>"
 language = "C"
 style = "Tag"
diff --git a/src/header/stdio/cbindgen.toml b/src/header/stdio/cbindgen.toml
index 1be8edc855..633b449850 100644
--- a/src/header/stdio/cbindgen.toml
+++ b/src/header/stdio/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stdarg.h", "stddef.h", "stdint.h", "sys/types.h"]
-include_guard = "_STDIO_H"
+include_guard = "_RELIBC_STDIO_H"
 trailer = "#include <bits/stdio.h>"
 language = "C"
 style = "Type"
diff --git a/src/header/stdlib/cbindgen.toml b/src/header/stdlib/cbindgen.toml
index 1f21fbb5ce..7e9b9a8698 100644
--- a/src/header/stdlib/cbindgen.toml
+++ b/src/header/stdlib/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "alloca.h"]
-include_guard = "_STDLIB_H"
+include_guard = "_RELIBC_STDLIB_H"
 trailer = "#include <bits/stdlib.h>"
 language = "C"
 style = "Type"
diff --git a/src/header/string/cbindgen.toml b/src/header/string/cbindgen.toml
index bea34fa1bb..9cee2c5da5 100644
--- a/src/header/string/cbindgen.toml
+++ b/src/header/string/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "stdint.h", "strings.h"]
-include_guard = "_STRING_H"
+include_guard = "_RELIBC_STRING_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/strings/cbindgen.toml b/src/header/strings/cbindgen.toml
index 20fc84e0ae..2897bd5423 100644
--- a/src/header/strings/cbindgen.toml
+++ b/src/header/strings/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "stdint.h"]
-include_guard = "_STRINGS_H"
+include_guard = "_RELIBC_STRINGS_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/termios/cbindgen.toml b/src/header/termios/cbindgen.toml
index eafb3c12af..03a82a153a 100644
--- a/src/header/termios/cbindgen.toml
+++ b/src/header/termios/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stdint.h"]
-include_guard = "_TERMIOS_H"
+include_guard = "_RELIBC_TERMIOS_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/time/cbindgen.toml b/src/header/time/cbindgen.toml
index 61af8ce831..0b7e7399bd 100644
--- a/src/header/time/cbindgen.toml
+++ b/src/header/time/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["sys/types.h", "stdint.h", "stddef.h"]
-include_guard = "_TIME_H"
+include_guard = "_RELIBC_TIME_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/unistd/cbindgen.toml b/src/header/unistd/cbindgen.toml
index f8450e0c69..610d6d21fe 100644
--- a/src/header/unistd/cbindgen.toml
+++ b/src/header/unistd/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "stdint.h", "sys/types.h"]
-include_guard = "_UNISTD_H"
+include_guard = "_RELIBC_UNISTD_H"
 trailer = "#include <bits/fcntl.h>\n#include <bits/unistd.h>"
 language = "C"
 style = "Tag"
diff --git a/src/header/utime/cbindgen.toml b/src/header/utime/cbindgen.toml
index a415b33c4b..e4e125542a 100644
--- a/src/header/utime/cbindgen.toml
+++ b/src/header/utime/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = []
-include_guard = "_UTIME_H"
+include_guard = "_RELIBC_UTIME_H"
 language = "C"
 style = "Tag"
 no_includes = true
diff --git a/src/header/wchar/cbindgen.toml b/src/header/wchar/cbindgen.toml
index 853cfd27e3..1a2836a9e7 100644
--- a/src/header/wchar/cbindgen.toml
+++ b/src/header/wchar/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "stdint.h", "time.h", "stdio.h" ]
-include_guard = "_WCHAR_H"
+include_guard = "_RELIBC_WCHAR_H"
 header = "#include <bits/wchar.h>"
 language = "C"
 style = "Type"
diff --git a/src/header/wctype/cbindgen.toml b/src/header/wctype/cbindgen.toml
index 872e70e925..032cfcb0ab 100644
--- a/src/header/wctype/cbindgen.toml
+++ b/src/header/wctype/cbindgen.toml
@@ -1,5 +1,5 @@
 sys_includes = ["stddef.h", "stdint.h", "time.h", "stdio.h" ]
-include_guard = "_WCTYPE_H"
+include_guard = "_RELIBC_WCTYPE_H"
 header = "#include <bits/wctype.h>"
 language = "C"
 style = "Type"