diff --git a/Libraries/LibCore/CSocketAddress.h b/Libraries/LibCore/CSocketAddress.h
index 23ac098cad..b90861ab3f 100644
--- a/Libraries/LibCore/CSocketAddress.h
+++ b/Libraries/LibCore/CSocketAddress.h
@@ -2,6 +2,7 @@
 
 #include <AK/IPv4Address.h>
 #include <arpa/inet.h>
+#include <netinet/in.h>
 #include <sys/socket.h>
 #include <sys/un.h>