diff --git a/libsrc/nes/waitvsync.s b/libsrc/nes/waitvsync.s
index 4bdf9a9d0..9f811c0a9 100644
--- a/libsrc/nes/waitvsync.s
+++ b/libsrc/nes/waitvsync.s
@@ -11,7 +11,7 @@
 
 .proc   _waitvsync
 
-wait:   lda     PPU_STATUS
+wait:   bit     PPU_STATUS
         bpl     wait
         rts