diff --git a/pack-objects.c b/pack-objects.c
index 322c4bc3e9da508900801a316c6ac4eeac4ab468..9a468bd9fc5e381c559c5ec5ffa2730519eb2014 100644
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -172,7 +172,7 @@ static void write_index_file(void)
 	 * Write the actual SHA1 entries..
 	 */
 	list = sorted_by_sha;
-	for (i < 0; i < nr_objects; i++) {
+	for (i = 0; i < nr_objects; i++) {
 		struct object_entry *entry = *list++;
 		unsigned int offset = htonl(entry->offset);
 		fwrite(&offset, 4, 1, f);