diff --git a/src/gui/qgsfieldmappingwidget.h b/src/gui/qgsfieldmappingwidget.h
index ed21c44d4a56..5f6a1c98c06a 100644
--- a/src/gui/qgsfieldmappingwidget.h
+++ b/src/gui/qgsfieldmappingwidget.h
@@ -144,8 +144,12 @@ class GUI_EXPORT QgsFieldMappingWidget : public QgsPanelWidget
     //! Moves down the currently selected field
     bool moveSelectedFieldsDown( );
 
-    //! Invert the field selection state
-    bool invertSelection( );
+    /**
+     * Invert the field selection state.
+     *
+     * \since QGIS 3.32
+     */
+    void invertSelection( );
 
   private: