diff --git a/packages/block-library/src/gallery/edit.js b/packages/block-library/src/gallery/edit.js
index 226e4da673d95..830d48501220f 100644
--- a/packages/block-library/src/gallery/edit.js
+++ b/packages/block-library/src/gallery/edit.js
@@ -73,6 +73,7 @@ const MOBILE_CONTROL_PROPS_RANGE_CONTROL = Platform.isNative
 	? { type: 'stepper' }
 	: {};
 
+const DEFAULT_BLOCK = { name: 'core/image' };
 const EMPTY_ARRAY = [];
 
 function GalleryEdit( props ) {
@@ -496,6 +497,7 @@ function GalleryEdit( props ) {
 	};
 
 	const innerBlocksProps = useInnerBlocksProps( blockProps, {
+		defaultBlock: DEFAULT_BLOCK,
 		orientation: 'horizontal',
 		renderAppender: false,
 		...nativeInnerBlockProps,