diff --git a/tests/plugins/clipboard/manual/customtypes.html b/tests/plugins/clipboard/manual/customtypes.html
index 1deab97e4b1..3b28e4b58bd 100644
--- a/tests/plugins/clipboard/manual/customtypes.html
+++ b/tests/plugins/clipboard/manual/customtypes.html
@@ -34,8 +34,8 @@ <h1>Classic editor</h1>
 						nativeDataTransfer = evt.clipboardData,
 						ckDataTransfer = new CKEDITOR.plugins.clipboard.dataTransfer( nativeDataTransfer );
 
-					ckDataTransfer.setData( 'text/plain', 'plain value' );
-					ckDataTransfer.setData( 'text/html', 'html value' );
+					ckDataTransfer.setData( 'text/plain', 'Text value' );
+					ckDataTransfer.setData( 'text/html', 'text/html value' );
 					ckDataTransfer.setData( 'foo-bar', 'foo-bar value' );
 					ckDataTransfer.setData( 'baz', 'baz value' );