diff --git a/packages/editor/src/utils/test/url.js b/packages/editor/src/utils/test/url.js
index ffe0568bbc502f..085f90a8c09617 100644
--- a/packages/editor/src/utils/test/url.js
+++ b/packages/editor/src/utils/test/url.js
@@ -8,6 +8,10 @@ describe( 'cleanForSlug()', () => {
 		expect( cleanForSlug( '/Is th@t Déjà_vu? ' ) ).toBe( 'is-tht-deja_vu' );
 	} );
 
+	it( 'Should allow unicode characters', () => {
+		expect( cleanForSlug( 'Καλημέρα Κόσμε' ) ).toBe( 'καλημέρα-κόσμε' )
+	} );
+
 	it( 'Should return an empty string for missing argument', () => {
 		expect( cleanForSlug() ).toBe( '' );
 	} );