1 files changed, 1 insertions, 2 deletions
diff --git a/commit.c b/commit.c
index f735f981bb..a8c9bfc8ba 100644
--- a/commit.c
+++ b/commit.c
@@ -1,4 +1,3 @@
-#include <ctype.h>
 #include "tag.h"
 #include "commit.h"
 #include "cache.h"
@@ -56,7 +55,7 @@ static struct commit *check_commit(struct object *obj,
 struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
 					      int quiet)
 {
-	struct object *obj = deref_tag(parse_object(sha1));
+	struct object *obj = deref_tag(parse_object(sha1), NULL, 0);
 
 	if (!obj)
 		return NULL;