diff --git a/pagelayout_editor/dialogs/properties_frame.cpp b/pagelayout_editor/dialogs/properties_frame.cpp
index 09b7b6434c..5a6aee83b9 100644
--- a/pagelayout_editor/dialogs/properties_frame.cpp
+++ b/pagelayout_editor/dialogs/properties_frame.cpp
@@ -466,6 +466,7 @@ void PROPERTIES_FRAME::onModify( wxCommandEvent& aEvent )
 void PROPERTIES_FRAME::onTextFocusLost( wxFocusEvent& aEvent )
 {
     m_propertiesDirty = true;
+    aEvent.Skip();      // Mandatory in wxFocusEvent
 }