diff --git a/libsrc/c128/waitvblank.s b/libsrc/c128/waitvblank.s
index e0a469d0e..c144e11c2 100644
--- a/libsrc/c128/waitvblank.s
+++ b/libsrc/c128/waitvblank.s
@@ -5,7 +5,7 @@
 
 _waitvblank:
 
-        lda     MODE
+        bit     MODE
         bmi     @c80
 
 @l1: