diff --git a/src/js/controller/piskel/PiskelController.js b/src/js/controller/piskel/PiskelController.js
index 218eb2d9..3e2fe419 100644
--- a/src/js/controller/piskel/PiskelController.js
+++ b/src/js/controller/piskel/PiskelController.js
@@ -130,6 +130,7 @@
       if (hiddenIndex >= index) {
         return hiddenIndex + 1;
       }
+      return hiddenIndex;
     });
 
     this.setCurrentFrameIndex(index);
@@ -151,6 +152,7 @@
       if (hiddenIndex > index) {
         return hiddenIndex - 1;
       }
+      return hiddenIndex;
     });
 
     // Current frame index is impacted if the removed frame was before the current frame