diff --git a/packages/block-library/src/image/edit.js b/packages/block-library/src/image/edit.js
index 20cad4981a0d5..a1dac3eae61b8 100644
--- a/packages/block-library/src/image/edit.js
+++ b/packages/block-library/src/image/edit.js
@@ -355,7 +355,7 @@ class ImageEdit extends Component {
 						label={ __( 'Alt Text (Alternative Text)' ) }
 						value={ alt }
 						onChange={ this.updateAlt }
-						help={ __( 'Describe the purpose of the image. Leave empty if the image is not a key part of the content.' ) }
+						help={ __( 'Alternative text describes your image to people who can’t see it. Add a short description with its key details.' ) }
 					/>
 					{ ! isEmpty( availableSizes ) && (
 						<SelectControl