diff --git a/gtk/gtktoolpalette.c b/gtk/gtktoolpalette.c
index ad90adbd0d..9bb93d9020 100644
--- a/gtk/gtktoolpalette.c
+++ b/gtk/gtktoolpalette.c
@@ -1572,7 +1572,7 @@ gtk_tool_palette_get_drop_item (GtkToolPalette *palette,
  *
  * Since: 2.20
  */
-GtkWidget*
+GtkToolItemGroup*
 gtk_tool_palette_get_drop_group (GtkToolPalette *palette,
                                  gint            x,
                                  gint            y)
@@ -1603,7 +1603,7 @@ gtk_tool_palette_get_drop_group (GtkToolPalette *palette,
 
       if (x0 >= 0 && x0 < widget->allocation.width &&
           y0 >= 0 && y0 < widget->allocation.height)
-        return widget;
+        return GTK_TOOL_ITEM_GROUP (widget);
     }
 
   return NULL;
diff --git a/gtk/gtktoolpalette.h b/gtk/gtktoolpalette.h
index 39005e57fd..c98dbef685 100644
--- a/gtk/gtktoolpalette.h
+++ b/gtk/gtktoolpalette.h
@@ -118,7 +118,7 @@ GtkToolbarStyle                gtk_tool_palette_get_style             (GtkToolPa
 GtkToolItem*                   gtk_tool_palette_get_drop_item         (GtkToolPalette            *palette,
                                                                        gint                       x,
                                                                        gint                       y);
-GtkWidget*                     gtk_tool_palette_get_drop_group        (GtkToolPalette            *palette,
+GtkToolItemGroup*              gtk_tool_palette_get_drop_group        (GtkToolPalette            *palette,
                                                                        gint                       x,
                                                                        gint                       y);
 GtkWidget*                     gtk_tool_palette_get_drag_item         (GtkToolPalette            *palette,