diff --git a/Gtkmm3_Mac/res/game1.ui b/Gtkmm3_Mac/res/game1.ui
index 35fd5e6..1056345 100644
--- a/Gtkmm3_Mac/res/game1.ui
+++ b/Gtkmm3_Mac/res/game1.ui
@@ -33,6 +33,7 @@
True
True
True
+ none
top
True
@@ -49,6 +50,7 @@
True
True
True
+ none
top
True
@@ -65,6 +67,7 @@
True
True
True
+ none
top
True
@@ -81,6 +84,7 @@
True
True
True
+ none
top
True
diff --git a/Gtkmm3_Mac/src/image_app/ImageApp.cc b/Gtkmm3_Mac/src/image_app/ImageApp.cc
index df4d345..8e54d7c 100644
--- a/Gtkmm3_Mac/src/image_app/ImageApp.cc
+++ b/Gtkmm3_Mac/src/image_app/ImageApp.cc
@@ -22,6 +22,7 @@ ImageApp::ImageApp()
scale.signal_value_changed().connect(sigc::mem_fun(*this, &ImageApp::scale_changed));
// Add control widgets
+ btnopen.set_relief(Gtk::RELIEF_NONE);
btnbox.pack_start(scale);
btnbox.pack_start(btnopen, Gtk::PACK_SHRINK);
main_box.pack_start(btnbox, Gtk::PACK_SHRINK);