diff --git a/src/lib/common/cargo.c b/src/lib/common/cargo.c
index 2b53bd2b..5449d47b 100644
--- a/src/lib/common/cargo.c
+++ b/src/lib/common/cargo.c
@@ -35,6 +35,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 #include "file.h"
 #include "unit.h"