diff --git a/invokeai/frontend/web/src/features/gallery/store/gallerySlice.ts b/invokeai/frontend/web/src/features/gallery/store/gallerySlice.ts
index fe17f45940..899e5db13d 100644
--- a/invokeai/frontend/web/src/features/gallery/store/gallerySlice.ts
+++ b/invokeai/frontend/web/src/features/gallery/store/gallerySlice.ts
@@ -38,7 +38,11 @@ export const gallerySlice = createSlice({
       state.selection = uniqBy(action.payload, (i) => i.image_name);
     },
     imageToCompareChanged: (state, action: PayloadAction<ImageDTO | null>) => {
-      state.imageToCompare = action.payload;
+      if (state.imageToCompare?.image_name === action.payload?.image_name) {
+        state.imageToCompare = null;
+      } else {
+        state.imageToCompare = action.payload;
+      }
       if (action.payload) {
         state.isImageViewerOpen = true;
       }