diff --git a/sys/dev/fb/vesa.c b/sys/dev/fb/vesa.c
index 4ab83c30ff4..bd6b759a049 100644
--- a/sys/dev/fb/vesa.c
+++ b/sys/dev/fb/vesa.c
@@ -1025,7 +1025,8 @@ vesa_bios_init(void)
 
 		++modes;
 	}
-	vesa_vmode[modes].vi_mode = EOT;
+	if (vesa_vmode != NULL)
+		vesa_vmode[modes].vi_mode = EOT;
 
 	if (bootverbose)
 		printf("VESA: %d mode(s) found\n", modes);