diff --git a/src/tools/sysprof-dump.c b/src/tools/sysprof-dump.c
index cb85880d..2b3936a7 100644
--- a/src/tools/sysprof-dump.c
+++ b/src/tools/sysprof-dump.c
@@ -20,6 +20,7 @@
 
 #include "config.h"
 
+#include <errno.h>
 #include <glib.h>
 #include <stdio.h>
 #include <stdlib.h>