diff --git a/lib/libmd5sum/libmd5sum.c b/lib/libmd5sum/libmd5sum.c
index 9a47b39c5..f6894d495 100644
--- a/lib/libmd5sum/libmd5sum.c
+++ b/lib/libmd5sum/libmd5sum.c
@@ -1,6 +1,6 @@
 #include "libmd5sum.h"
 #include <sys/types.h>
-
+#include <error.h>
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>