diff --git a/pymlac/CPU.test b/pymlac/CPU.test
index 9964bfb..25a8946 100644
--- a/pymlac/CPU.test
+++ b/pymlac/CPU.test
@@ -434,15 +434,16 @@ setreg ac 0; setreg pc 0100; mount ptr test.ptr
 # IOS
 # PSF
 # PPC
-setreg ac 0; setreg pc 0100; mount ptp test.ptp
+setreg ac 0; setreg pc 0100; mount ptp test_punch_3.ptp
         setmem 0100 [LAW 0|PSF|JMP 0101|PPC|IAC|JMP 0101]
         rununtil 0104; checkreg ac 0
         rununtil 0104; checkreg ac 1
         rununtil 0104; checkreg ac 2; checkreg pc 0104
-	checkfile test.ptp
-setreg pc 0100; mount ptp test.ptp
+	checkfile test_punch_3.ptp correct/test_punch_3.ptp
+setreg pc 0100; mount ptp test_punch_11.ptp
         setmem 0100 [LWC 10|DAC 1|LAW 0|PSF|JMP 0103|PPC|IAC|ISZ 1|JMP 0103|HLT]
         rununtil 0111; checkreg ac 012; checkreg pc 0111
-	checkfile test.ptp
+	checkfile test_punch_11.ptp correct/test_punch_11.ptp
+
 # and lots of IOT instructions