diff --git a/programs/memcopy.s65 b/programs/memcopy.s65
index 76b4cd4..01f8a6b 100644
--- a/programs/memcopy.s65
+++ b/programs/memcopy.s65
@@ -12,8 +12,8 @@ INCLUDE_MEMCOPY = 1
     cpy
 loop:
     beq @loop_end
-    lda (ARG0,y)
-    sta (ARG2,y)
+    lda (ARG0),y
+    sta (ARG2),y
     dey
     bra @loop
 loop_end: