diff --git a/packages/block-directory/src/plugins/index.js b/packages/block-directory/src/plugins/index.js
index 283ff0ea4d271..50418a9944d31 100644
--- a/packages/block-directory/src/plugins/index.js
+++ b/packages/block-directory/src/plugins/index.js
@@ -13,6 +13,9 @@ import InstalledBlocksPrePublishPanel from './installed-blocks-pre-publish-panel
 import getInstallMissing from './get-install-missing';
 
 registerPlugin( 'block-directory', {
+	// The icon is explicitly set to undefined to prevent PluginPrePublishPanel
+	// from rendering the fallback icon pluginIcon.
+	icon: undefined,
 	render() {
 		return (
 			<>
diff --git a/packages/block-directory/src/plugins/installed-blocks-pre-publish-panel/index.js b/packages/block-directory/src/plugins/installed-blocks-pre-publish-panel/index.js
index 17630c9904e8b..233f3261c79fc 100644
--- a/packages/block-directory/src/plugins/installed-blocks-pre-publish-panel/index.js
+++ b/packages/block-directory/src/plugins/installed-blocks-pre-publish-panel/index.js
@@ -3,7 +3,6 @@
  */
 import { _n, sprintf } from '@wordpress/i18n';
 import { useSelect } from '@wordpress/data';
-import { blockDefault } from '@wordpress/icons';
 import { PluginPrePublishPanel } from '@wordpress/editor';
 
 /**
@@ -24,7 +23,6 @@ export default function InstalledBlocksPrePublishPanel() {
 
 	return (
 		<PluginPrePublishPanel
-			icon={ blockDefault }
 			title={ sprintf(
 				// translators: %d: number of blocks (number).
 				_n(