diff --git a/src/fx/fx.shr.lr2.a b/src/fx/fx.shr.lr2.a
index 854dfbefd..6a7b0eb53 100644
--- a/src/fx/fx.shr.lr2.a
+++ b/src/fx/fx.shr.lr2.a
@@ -26,16 +26,15 @@ shrhi = $38                          ; $C8 bytes
 start
 !pseudopc 0 {
 loop1    ldy   #1
-loop2    ldx   #0
+loop2    ldx   #$C8
 loop3    lda   shrlo-1, x
          sta   <dst+1
          lda   shrhi-1, x
          sta   <dst+2
          lda   (<dst+1), y
 dst      sta   $0000, y              ; SMC
-         inx
-         cpx   #$C8
-         bcc   loop3
+         dex
+         bne   loop3
          lda   $C000
          bmi   @exit
          iny