diff --git a/wip-hugo/routines/memory/memcpy.s b/wip-hugo/routines/memory/memcpy.s
index 4001096..de752f6 100644
--- a/wip-hugo/routines/memory/memcpy.s
+++ b/wip-hugo/routines/memory/memcpy.s
@@ -13,12 +13,16 @@ change_length:
         DEC length
         BNE loop
 
-        ;;check if length hi byte is 0. if it is end this
-        LDA length + 1
-        BEQ loop_end
-
         DEC length +1
-        JMP loop
+        BPL loop
+        JMP loop_end
+
+        ;;;;check if length hi byte is 0. if it is end this
+        ;;LDA length + 1
+        ;;BEQ loop_end
+
+        ;;DEC length +1
+        ;;JMP loop
 y_overflow:
         LDY #$00
         INC B_start + 1