diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index 154a86c..511bcd2 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -450,7 +450,7 @@
 __END_DECLS
 #endif /* _GNU_SOURCE */
 
-#if defined(__BIONIC_FORTIFY)
+#if defined(__BIONIC_FORTIFY) && !defined(__clang__)
 
 __BEGIN_DECLS
 
@@ -523,6 +523,6 @@
 
 __END_DECLS
 
-#endif /* defined(__BIONIC_FORTIFY) */
+#endif /* defined(__BIONIC_FORTIFY) && !defined(__clang__) */
 
 #endif /* _STDIO_H_ */