diff --git a/src/refobject.c b/src/refobject.c
index 243819bb..ab06e6b2 100644
--- a/src/refobject.c
+++ b/src/refobject.c
@@ -11,6 +11,7 @@
 #endif
 
 #include <stdlib.h>
+#include <string.h>
 
 #include "common/thread/thread.h"