diff --git a/src/vmsrc/apple/plvm01.s b/src/vmsrc/apple/plvm01.s
index 1c99324..73645fe 100644
--- a/src/vmsrc/apple/plvm01.s
+++ b/src/vmsrc/apple/plvm01.s
@@ -27,8 +27,11 @@ SEGBEGIN JMP    VMINIT
 ;* SYSTEM INTERPRETER ENTRYPOINT
 ;*
 INTERP  PLA
+        CLC
+        ADC     #$01
         STA     IPL
         PLA
+        ADC     #$00
         STA     IPH
         LDY     #$01
         JMP     FETCHOP