diff --git a/libsrc/lynx/lynx-cart.s b/libsrc/lynx/lynx-cart.s
index 94edff677..f9417aed3 100644
--- a/libsrc/lynx/lynx-cart.s
+++ b/libsrc/lynx/lynx-cart.s
@@ -88,7 +88,7 @@ lynxblock:
         lda __iodat
         sta IODAT
         stz _FileBlockByte
-        lda #<($100-(>__BLOCKSIZE__))
+        lda #<($100-(>__BANK0BLOCKSIZE__))
         sta _FileBlockByte+1
         ply
         plx