diff --git a/pc/instrs/INSTRS b/pc/instrs/INSTRS
index 8f86e93..7f59214 100644
--- a/pc/instrs/INSTRS
+++ b/pc/instrs/INSTRS
@@ -380,4 +380,6 @@ prn m
 # Debugging instructions
 #
 break
+cbreakz
+cbreaknz