diff --git a/src/gui/editorwidgets/qgsvaluerelationwidgetwrapper.cpp b/src/gui/editorwidgets/qgsvaluerelationwidgetwrapper.cpp
index 666ab2cf151d..1e433da0d6d9 100644
--- a/src/gui/editorwidgets/qgsvaluerelationwidgetwrapper.cpp
+++ b/src/gui/editorwidgets/qgsvaluerelationwidgetwrapper.cpp
@@ -519,7 +519,7 @@ void QgsValueRelationWidgetWrapper::populate( )
 
   if ( mComboBox )
   {
-    mComboBox->clear();
+    whileBlocking( mComboBox )->clear();
     if ( config( QStringLiteral( "AllowNull" ) ).toBool( ) )
     {
       whileBlocking( mComboBox )->addItem( tr( "(no selection)" ), QVariant( field().type( ) ) );