diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 66167830fefd..4208e7b5acec 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -1058,6 +1058,7 @@ static const char *fbcon_startup(void)
 		vc->vc_font.height = font->height;
 		vc->vc_font.data = (void *)(p->fontdata = font->data);
 		vc->vc_font.charcount = 256; /* FIXME  Need to support more fonts */
+		BUG_ON(p->userfont);
 	} else {
 		p->fontdata = vc->vc_font.data;
 	}
@@ -1138,6 +1139,7 @@ static void fbcon_init(struct vc_data *vc, int init)
 			vc->vc_font.data = (void *)(p->fontdata = font->data);
 			vc->vc_font.charcount = 256; /* FIXME  Need to
 							support more fonts */
+			BUG_ON(p->userfont);
 		}
 	}