diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index cdccf9dfe1..29f69220b4 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -657,7 +657,7 @@ class AMSCountPopupWindow : public PopupWindow
 {
 public:
     AMSCountPopupWindow(wxWindow * parent, wxStaticText *text, int index)
-        : PopupWindow(parent, wxBORDER_NONE)
+        : PopupWindow(parent, wxBORDER_NONE | wxPU_CONTAINS_CONTROLS)
     {
         auto msg  = new wxStaticText(this, wxID_ANY, _L("Please set the number of ams installed on the this extrusion head."));
         msg->SetFont(Label::Body_14);