diff --git a/src/tools/bookmark_ignore.c b/src/tools/bookmark_ignore.c
index 5e6a43c5..09053e5b 100644
--- a/src/tools/bookmark_ignore.c
+++ b/src/tools/bookmark_ignore.c
@@ -38,6 +38,7 @@
 #include <glib.h>
 #include <glib/gstdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "config/files.h"
 #include "config/preferences.h"