diff --git a/widget/src/gtk/nsWidget.cpp b/widget/src/gtk/nsWidget.cpp
index 665c46e488d..d9ec2aa0efe 100644
--- a/widget/src/gtk/nsWidget.cpp
+++ b/widget/src/gtk/nsWidget.cpp
@@ -1250,6 +1250,8 @@ nsWidget::HandleEvent(GdkEvent *event)
       OnMotionNotifySignal (&event->motion);
       break;
     case GDK_BUTTON_PRESS:
+    case GDK_2BUTTON_PRESS:
+    case GDK_3BUTTON_PRESS:
       OnButtonPressSignal (&event->button);
       break;
     case GDK_BUTTON_RELEASE: