diff --git a/src/notification/notification.js b/src/notification/notification.js
index 1b57b500..0062b6f8 100644
--- a/src/notification/notification.js
+++ b/src/notification/notification.js
@@ -28,7 +28,7 @@ export default class Notification extends Plugin {
 	 * @inheritDoc
 	 */
 	static get pluginName() {
-		return 'ui/notification';
+		return 'Notification';
 	}
 
 	/**
diff --git a/src/panel/balloon/contextualballoon.js b/src/panel/balloon/contextualballoon.js
index 3c243079..455c9b2a 100644
--- a/src/panel/balloon/contextualballoon.js
+++ b/src/panel/balloon/contextualballoon.js
@@ -32,7 +32,7 @@ export default class ContextualBalloon extends Plugin {
 	 * @inheritDoc
 	 */
 	static get pluginName() {
-		return 'ui/contextualballoon';
+		return 'ContextualBalloon';
 	}
 
 	/**
diff --git a/src/toolbar/contextual/contextualtoolbar.js b/src/toolbar/contextual/contextualtoolbar.js
index b2319b54..a002c168 100644
--- a/src/toolbar/contextual/contextualtoolbar.js
+++ b/src/toolbar/contextual/contextualtoolbar.js
@@ -26,7 +26,7 @@ export default class ContextualToolbar extends Plugin {
 	 * @inheritDoc
 	 */
 	static get pluginName() {
-		return 'ui/contextualtoolbar';
+		return 'ContextualToolbar';
 	}
 
 	/**
diff --git a/tests/panel/balloon/contextualballoon.js b/tests/panel/balloon/contextualballoon.js
index 5f8f4522..18b1588f 100644
--- a/tests/panel/balloon/contextualballoon.js
+++ b/tests/panel/balloon/contextualballoon.js
@@ -55,7 +55,7 @@ describe( 'ContextualBalloon', () => {
 
 	describe( 'pluginName', () => {
 		it( 'should return plugin by name', () => {
-			expect( editor.plugins.get( 'ui/contextualballoon' ) ).to.equal( balloon );
+			expect( editor.plugins.get( 'ContextualBalloon' ) ).to.equal( balloon );
 		} );
 	} );
 
diff --git a/tests/toolbar/contextual/contextualtoolbar.js b/tests/toolbar/contextual/contextualtoolbar.js
index 43e44503..14488413 100644
--- a/tests/toolbar/contextual/contextualtoolbar.js
+++ b/tests/toolbar/contextual/contextualtoolbar.js
@@ -109,7 +109,7 @@ describe( 'ContextualToolbar', () => {
 
 	describe( 'pluginName', () => {
 		it( 'should return plugin by its name', () => {
-			expect( editor.plugins.get( 'ui/contextualtoolbar' ) ).to.equal( contextualToolbar );
+			expect( editor.plugins.get( 'ContextualToolbar' ) ).to.equal( contextualToolbar );
 		} );
 	} );