Index: uspace/lib/congfx/src/console.c
===================================================================
--- uspace/lib/congfx/src/console.c	(revision bea947f408d47e1cbc0f0bf0321d45f2f00ad11a)
+++ uspace/lib/congfx/src/console.c	(revision 86307480d844894603d178493737b7d38c31e005)
@@ -206,4 +206,8 @@
 	errno_t rc;
 
+	/* Check that we support all requested flags */
+	if ((params->flags & ~bmpf_color_key) != 0)
+		return ENOTSUP;
+
 	cbm = calloc(1, sizeof(console_gc_bitmap_t));
 	if (cbm == NULL)