diff --git a/src/header/termios/cbindgen.toml b/src/header/termios/cbindgen.toml
index 88af46072a..85d08f0d90 100644
--- a/src/header/termios/cbindgen.toml
+++ b/src/header/termios/cbindgen.toml
@@ -1,4 +1,8 @@
-sys_includes = ["sys/types.h", "stdint.h", "features.h"]
+# POSIX header spec: https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/termios.h.html
+#
+# Spec quotations relating to includes:
+# - "The <termios.h> header shall define the pid_t type as described in <sys/types.h>."
+sys_includes = ["sys/types.h"]
 include_guard = "_RELIBC_TERMIOS_H"
 language = "C"
 style = "Tag"
diff --git a/src/header/termios/mod.rs b/src/header/termios/mod.rs
index 9309f7a3e0..a6ce8be41e 100644
--- a/src/header/termios/mod.rs
+++ b/src/header/termios/mod.rs
@@ -40,6 +40,9 @@ pub const TCSANOW: c_int = 0;
 pub const TCSADRAIN: c_int = 1;
 pub const TCSAFLUSH: c_int = 2;
 
+#[unsafe(no_mangle)]
+pub unsafe extern "C" fn cbindgen_export_winsize(winsize: winsize) {}
+
 /// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/termios.h.html>.
 #[cfg(target_os = "linux")]
 #[repr(C)]