diff --git a/packages/flutter/lib/src/widgets/image.dart b/packages/flutter/lib/src/widgets/image.dart
index 39ef6bd311b3d..a70318a1789e2 100644
--- a/packages/flutter/lib/src/widgets/image.dart
+++ b/packages/flutter/lib/src/widgets/image.dart
@@ -739,7 +739,7 @@ class Image extends StatefulWidget {
   ///       child: child,
   ///     );
   ///   },
-  ///   loadingBuilder: (BuildContext context, Widget child, ImageChunkEvent loadingProgress) {
+  ///   loadingBuilder: (BuildContext context, Widget child, ImageChunkEvent? loadingProgress) {
   ///     return Center(child: child);
   ///   },
   /// )