diff --git a/src/views/Puzzle/Puzzle.tsx b/src/views/Puzzle/Puzzle.tsx
index 6f8c6aca3c..64818ffa1f 100644
--- a/src/views/Puzzle/Puzzle.tsx
+++ b/src/views/Puzzle/Puzzle.tsx
@@ -1062,6 +1062,7 @@ export class _Puzzle extends React.Component<PuzzleProperties, PuzzleState> {
                                         <option value={9}>{_("9x9")}</option>
                                         <option value={7}>{_("7x7")}</option>
                                         <option value={5}>{_("5x5")}</option>
+                                        <option value={4}>{_("4x4")}</option>
                                     </select>
 
                                     <select