diff --git a/src/header/stdlib/cbindgen.toml b/src/header/stdlib/cbindgen.toml
index 6de6a6fa4b..fb6dde8a17 100644
--- a/src/header/stdlib/cbindgen.toml
+++ b/src/header/stdlib/cbindgen.toml
@@ -6,6 +6,9 @@ style = "Type"
 no_includes = true
 cpp_compat = true
 
+[defines]
+"target_pointer_width=64" = "__LP64__"
+
 [enum]
 prefix_with_name = true
 
diff --git a/src/header/stdlib/mod.rs b/src/header/stdlib/mod.rs
index 74d37af0a1..64ca259a87 100644
--- a/src/header/stdlib/mod.rs
+++ b/src/header/stdlib/mod.rs
@@ -100,6 +100,11 @@ pub unsafe extern "C" fn abort() -> ! {
     intrinsics::abort();
 }
 
+#[cfg(not(target_pointer_width = "64"))]
+#[no_mangle]
+static __stack_chk_guard: uintptr_t = 0x19fcadfe;
+
+#[cfg(target_pointer_width = "64")]
 #[no_mangle]
 static __stack_chk_guard: uintptr_t = 0xd048c37519fcadfe;