diff --git a/mod/box/index.m b/mod/box/index.m
index 799e99f6c0091dc6c2ff36fbbbc1e2c38587d973..2db1883e73fdc94d947e634f3e637fbedb11a12c 100644
--- a/mod/box/index.m
+++ b/mod/box/index.m
@@ -318,7 +318,7 @@ hash_iterator_free(struct iterator *iterator)
 
 - (void) checkKeyParts: (int) parts :(bool) partial_key_allowed
 {
-	/* Hash indexes never allows partial keys. */
+	/* Hash indexes never allow partial keys. */
 	(void) partial_key_allowed;
 	[super checkKeyParts: parts :false];
 }