diff --git a/include/zp_reg.mfk b/include/zp_reg.mfk
index 55edcd68..d09f9ac8 100644
--- a/include/zp_reg.mfk
+++ b/include/zp_reg.mfk
@@ -1,15 +1,15 @@
 
 inline asm byte __mul_u8u8u8() {
     ? LDA #0
-    ? JMP start
-add:
+    ? JMP __mul_u8u8u8_start
+__mul_u8u8u8_add:
     CLC
     ADC __reg.lo
-loop:
+__mul_u8u8u8_loop:
     ASL __reg.lo
-start:
+__mul_u8u8u8_start:
     LSR __reg.hi
-    BCS add
-    BNE loop
+    BCS __mul_u8u8u8_add
+    BNE __mul_u8u8u8_loop
     ? RTS
 }