diff --git a/modules/system/system.install b/modules/system/system.install
index d91f4ef02a352e1f33043987a67f041ef9dd6cc4..07300db706187e59fa51a8601ab90f04c6a19052 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -3536,7 +3536,7 @@ function system_update_1022() {
       $ret[] = update_sql("CREATE INDEX {users}_created_idx ON {users} (created)");
       break;
   }
-  // Also appears as system_update_2004(). Ensure we don't update twice.
+  // Also appears as system_update_6004(). Ensure we don't update twice.
   variable_set('system_update_1022', TRUE);
   return $ret;
 }