diff --git a/Libraries/LibCore/CLocalSocket.h b/Libraries/LibCore/CLocalSocket.h
index cdb4eeba55..3845707c93 100644
--- a/Libraries/LibCore/CLocalSocket.h
+++ b/Libraries/LibCore/CLocalSocket.h
@@ -1,3 +1,4 @@
+#pragma once
 #include <LibCore/CSocket.h>
 
 class CLocalSocket final : public CSocket {