diff --git a/extras/libmemif/src/libmemif.h b/extras/libmemif/src/libmemif.h
index d1c5b05090d..12d2f1e3af4 100644
--- a/extras/libmemif/src/libmemif.h
+++ b/extras/libmemif/src/libmemif.h
@@ -30,6 +30,7 @@
 #include <inttypes.h>
 #include <sys/types.h>
 #include <sys/timerfd.h>
+#include <sys/types.h>
 
 /*! Error codes */
 typedef enum