diff --git a/lib/gui/graphic_utils.c b/lib/gui/graphic_utils.c
index 3800ee2..95687df 100644
--- a/lib/gui/graphic_utils.c
+++ b/lib/gui/graphic_utils.c
@@ -219,7 +219,7 @@
 	sc->s.y = 0;
 	sc->s.width = sc->info.xres;
 	sc->s.height = sc->info.yres;
-	sc->fbsize = sc->s.x * sc->s.x * (sc->info.bits_per_pixel >> 3);
+	sc->fbsize = sc->s.width * sc->s.height * (sc->info.bits_per_pixel >> 3);
 
 	if (offscreen) {
 		/* Don't fail if malloc fails, just continue rendering directly