diff --git a/channels/chan_h323.c b/channels/chan_h323.c
index 87fbcd786f..8761026d04 100644
--- a/channels/chan_h323.c
+++ b/channels/chan_h323.c
@@ -51,6 +51,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 }
 #endif
 
+#include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/signal.h>
 #include <sys/param.h>