diff --git a/mozilla/embedding/tests/MSDotNETCSEmbed/MSDotNETCSEmbedForm.cs b/mozilla/embedding/tests/MSDotNETCSEmbed/MSDotNETCSEmbedForm.cs
index a6b87d21adc..b64ee0cc4cf 100644
--- a/mozilla/embedding/tests/MSDotNETCSEmbed/MSDotNETCSEmbedForm.cs
+++ b/mozilla/embedding/tests/MSDotNETCSEmbed/MSDotNETCSEmbedForm.cs
@@ -175,6 +175,7 @@ namespace MSDotNETCSEmbed
 			{
 				case '\r':
 					gecko1.OpenURL(urlBar.Text);
+					e.Handled = true;
 					break;
 			}
 		}