diff --git a/newlib/libc/include/strings.h b/newlib/libc/include/strings.h
index 122f2fcd6..50a304215 100644
--- a/newlib/libc/include/strings.h
+++ b/newlib/libc/include/strings.h
@@ -53,11 +53,9 @@ void	 explicit_bzero(void *, size_t);
 #if __MISC_VISIBLE || __POSIX_VISIBLE < 200809 || __XSI_VISIBLE >= 700
 int	 ffs(int) __pure2;
 #endif
-#if __GNU_VISIBLE
+#if __BSD_VISIBLE
 int	 ffsl(long) __pure2;
 int	 ffsll(long long) __pure2;
-#endif
-#if __BSD_VISIBLE
 int	 fls(int) __pure2;
 int	 flsl(long) __pure2;
 int	 flsll(long long) __pure2;