A twist mop is disclosed. The twist mop includes a handle with a recessed first end that includes a hole. The twist mop includes a collar that can rotate around the handle. Mop fibers are coupled to a connector that inserts into the recessed end of the handle and are also coupled to a collar that is rotatably mounted to the handle. The connector also includes a hole. A retaining clip is provided to insert in the hole in the handle and in the hole in the connector so as to prevent the connector from becoming inadvertently disconnected from the handle. The retaining clip includes a tab with a gripping surface that may be concave to facilitate improved removal of the retaining clip. The tab may also include angled side walls.