diff --git a/app/tools/gimpfiltertool.c b/app/tools/gimpfiltertool.c
index 9459a42cc5..a9a44beea3 100644
--- a/app/tools/gimpfiltertool.c
+++ b/app/tools/gimpfiltertool.c
@@ -1248,6 +1248,7 @@ gimp_filter_tool_update_dialog_operation_settings (GimpFilterTool *filter_tool)
           expander = gtk_expander_new (_("Blending Options"));
           gtk_box_pack_start (GTK_BOX (vbox), expander,
                               FALSE, FALSE, 0);
+          gtk_expander_set_resize_toplevel (GTK_EXPANDER (expander), TRUE);
           gtk_widget_show (expander);
 
           g_object_bind_property (options,  "blending-options-expanded",
diff --git a/app/tools/gimpoperationtool.c b/app/tools/gimpoperationtool.c
index 6dd2fff1a1..f427ee9019 100644
--- a/app/tools/gimpoperationtool.c
+++ b/app/tools/gimpoperationtool.c
@@ -266,7 +266,7 @@ gimp_operation_tool_dialog (GimpFilterTool *filter_tool)
   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (options_sw),
                                   GTK_POLICY_NEVER, GTK_POLICY_NEVER);
   gtk_box_pack_start (GTK_BOX (main_vbox), options_sw,
-                      FALSE, FALSE, 0);
+                      TRUE, TRUE, 0);
   gtk_widget_show (options_sw);
 
   /*  The options vbox  */