diff --git a/src/include/ndpi_includes.h b/src/include/ndpi_includes.h
index ce36a25f9..fc6a27b85 100644
--- a/src/include/ndpi_includes.h
+++ b/src/include/ndpi_includes.h
@@ -35,6 +35,7 @@
 #ifdef WIN32
 #include "ndpi_win32.h"
 #else
+#include <sys/types.h>
 #include <sys/param.h>
 #include <pthread.h>
 #include <arpa/inet.h>