diff --git a/src/laybasic/laybasic/layEditorServiceBase.cc b/src/laybasic/laybasic/layEditorServiceBase.cc
index e28e1ba5e..06f736516 100644
--- a/src/laybasic/laybasic/layEditorServiceBase.cc
+++ b/src/laybasic/laybasic/layEditorServiceBase.cc
@@ -331,6 +331,9 @@ void
 EditorServiceBase::deactivated ()
 {
   clear_mouse_cursors ();
+  if (ui ()) {
+    ui ()->ungrab_mouse (this);
+  }
   m_active = false;
 }