diff --git a/src/CLI2.cpp b/src/CLI2.cpp
index 991592661..cc8d884a8 100644
--- a/src/CLI2.cpp
+++ b/src/CLI2.cpp
@@ -2029,17 +2029,6 @@ bool CLI2::isUUIDList (const std::string& raw) const
   return false;
 }
 
-////////////////////////////////////////////////////////////////////////////////
-bool CLI2::isPattern (const std::string& raw) const
-{
-  if (raw.length () > 2 &&
-      raw[0] == '/'     &&
-      raw[raw.length () - 1] == '/')
-    return true;
-
-  return false;
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // The non-g case is caught by ::isPattern, but not categorized, so it doesn't
 // matter.
@@ -2170,7 +2159,7 @@ bool CLI2::disqualifyOnlyParenOps (
              isUUID         (lexeme.first) || // obsolete
              isIDSequence   (lexeme.first) || // obsolete
              isID           (lexeme.first) || // obsolete
-             isPattern      (lexeme.first) ||
+             isPattern      (lexeme.first) || // obsolete
              isAttribute    (lexeme.first))
       ++opSugarCount;
   }
diff --git a/src/CLI2.h b/src/CLI2.h
index 9f566ed9e..07c44e111 100644
--- a/src/CLI2.h
+++ b/src/CLI2.h
@@ -130,7 +130,6 @@ private:
   void decomposeModSubstitutions ();
 
   bool isUUIDList       (const std::string&) const;
-  bool isPattern        (const std::string&) const;
   bool isSubstitution   (const std::string&) const;
   bool isAttribute      (const std::string&) const;
   bool isOperator       (const std::string&) const;