diff --git a/src/capwap/lwapp.h b/src/capwap/lwapp.h
index 4b81a6ba..09577f9c 100644
--- a/src/capwap/lwapp.h
+++ b/src/capwap/lwapp.h
@@ -23,6 +23,7 @@
 #include <stdint.h>
 #include <string.h>
 #include <arpa/inet.h>
+#include <sys/socket.h>
 
 #include "bstr.h"