diff -upr mate-control-center/font-viewer/font-thumbnailer.c mate-control-center-test/font-viewer/font-thumbnailer.c

--- mate-control-center/font-viewer/font-thumbnailer.c	2015-08-30 14:47:43.838836593 +0200

+++ mate-control-center-test/font-viewer/font-thumbnailer.c	2015-08-30 14:43:18.289062000 +0200

@@ -176,7 +176,6 @@ main (int argc,

     gchar *contents = NULL;

     gboolean retval, default_thumbstr = TRUE;

     gint rv = 1;

-    GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };

     GdkRGBA black = { 0.0, 0.0, 0.0, 1.0 };

     cairo_surface_t *surface;

     cairo_t *cr;

@@ -264,9 +263,6 @@ main (int argc,

                                           thumb_size, thumb_size);

     cr = cairo_create (surface);

-    gdk_cairo_set_source_rgba (cr, &white);

-    cairo_paint (cr);

-

     font = cairo_ft_font_face_create_for_ft_face (face, 0);

     cairo_set_font_face (cr, font);

     cairo_font_face_destroy (font);