diff --git a/Userland/Libraries/LibC/search.h b/Userland/Libraries/LibC/search.h
index b3eb5a148ce..cd02738a5af 100644
--- a/Userland/Libraries/LibC/search.h
+++ b/Userland/Libraries/LibC/search.h
@@ -6,6 +6,8 @@
 
 #pragma once
 
+#include <sys/cdefs.h>
+
 __BEGIN_DECLS
 
 typedef enum {