1 files changed, 2 insertions, 1 deletions
diff --git a/builtin-mv.c b/builtin-mv.c
index e47942c135..ce8187c1e9 100644
--- a/builtin-mv.c
+++ b/builtin-mv.c
@@ -48,7 +48,8 @@ static const char *add_slash(const char *path)
 	if (path[len - 1] != '/') {
 		char *with_slash = xmalloc(len + 2);
 		memcpy(with_slash, path, len);
-		strcat(with_slash + len, "/");
+		with_slash[len++] = '/';
+		with_slash[len] = 0;
 		return with_slash;
 	}
 	return path;