diff --git a/reactos/drivers/base/bootvid/precomp.h b/reactos/drivers/base/bootvid/precomp.h
index 903d0d2f4c5..18b54bf570c 100644
--- a/reactos/drivers/base/bootvid/precomp.h
+++ b/reactos/drivers/base/bootvid/precomp.h
@@ -43,4 +43,4 @@ extern ULONG curr_x;
 extern ULONG curr_y;
 extern ULONG_PTR VgaRegisterBase;
 extern ULONG_PTR VgaBase;
-extern CHAR FontData[256 * 13];
+extern UCHAR FontData[256 * 13];