diff --git a/tools/matchcompiler.py b/tools/matchcompiler.py
index e2b90a5d0..6713f86d9 100755
--- a/tools/matchcompiler.py
+++ b/tools/matchcompiler.py
@@ -89,6 +89,8 @@ class MatchCompiler:
             return 'tok->isComparisonOp()'
         elif tok == '%num%':
             return 'tok->isNumber()'
+        elif tok == '%cop%':
+            return 'tok->isConstOp()'
         elif tok == '%op%':
             return 'tok->isOp()'
         elif tok == '%or%':