--- a/ui/gtk/window.c	Sun Nov 19 09:00:16 2017 +0100
+++ b/ui/gtk/window.c	Sun Nov 19 09:38:23 2017 +0100
@@ -122,7 +122,8 @@
     
     // window content
     // the content has a (TODO: not yet) configurable frame
-    GtkWidget *frame = gtk_alignment_new(0.5, 0.5, 1, 1);
+    GtkWidget *frame = gtk_frame_new(NULL);
+    gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_NONE);
     gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, TRUE, 0);
     
     // content vbox