diff --git a/packages/palette_generator/example/image_colors/lib/main.dart b/packages/palette_generator/example/image_colors/lib/main.dart
index f442b88b54..0c90334380 100644
--- a/packages/palette_generator/example/image_colors/lib/main.dart
+++ b/packages/palette_generator/example/image_colors/lib/main.dart
@@ -120,7 +120,7 @@ class _ImageColorsState extends State<ImageColors> {
   void _onPanEnd(DragEndDetails details) async {
     Rect newRegion =
         (Offset.zero & imageKey.currentContext.size).intersect(dragRegion);
-    if (newRegion.size == Size.zero) {
+    if (newRegion.size.width < 4 && newRegion.size.width < 4) {
       newRegion = Offset.zero & imageKey.currentContext.size;
     }
     await _updatePaletteGenerator(newRegion);
@@ -302,4 +302,3 @@ class PaletteSwatch extends StatelessWidget {
     return swatch;
   }
 }
-