diff --git a/src/python/flowmetal/parser.py b/src/python/flowmetal/parser.py
index fcd27a3..daf2e34 100644
--- a/src/python/flowmetal/parser.py
+++ b/src/python/flowmetal/parser.py
@@ -242,6 +242,7 @@ class Parser(SexpParser):
     @classmethod
     def ispunct(cls, ch: str):
         return ch in (
+            '""'
             ';'   # Semicolon
             '()'  # Parens
             '⟮⟯'   # 'flat' parens