diff --git a/include/wx/propgrid/property.h b/include/wx/propgrid/property.h
index 2d8b69c1d0..9ec2776a80 100644
--- a/include/wx/propgrid/property.h
+++ b/include/wx/propgrid/property.h
@@ -2043,7 +2043,7 @@ public:
     void SetValueToUnspecified()
     {
         wxVariant val;  // Create NULL variant
-        SetValue(val);
+        SetValue(val, NULL, wxPG_SETVAL_REFRESH_EDITOR);
     }
 
     // Helper function (for wxPython bindings and such) for settings protected
diff --git a/include/wx/propgrid/propgridiface.h b/include/wx/propgrid/propgridiface.h
index afc1d191de..6c0d41af10 100644
--- a/include/wx/propgrid/propgridiface.h
+++ b/include/wx/propgrid/propgridiface.h
@@ -1053,8 +1053,7 @@ public:
     void SetPropertyValueUnspecified( wxPGPropArg id )
     {
         wxPG_PROP_ARG_CALL_PROLOG()
-        wxVariant nullVariant;
-        SetPropVal(p, nullVariant);
+        p->SetValueToUnspecified();
     }
 
 #ifndef SWIG