diff --git a/mlir/dialect.py b/mlir/dialect.py
index 3a192ee..fb1cc64 100644
--- a/mlir/dialect.py
+++ b/mlir/dialect.py
@@ -79,8 +79,8 @@ def make_rules(cls):
             for fname, ftype in sfields:
                 syntax = syntax.replace('{%s.%s}' % (fname, ftype), ftype)
             # Replace back braces
-            syntax = syntax.replace('{LBRACE}', '{')
-            syntax = syntax.replace('{RBRACE}', '}')
+            syntax = syntax.replace('{LBRACE}', '"{"')
+            syntax = syntax.replace('{RBRACE}', '"}"')
             lark_exprs.append(syntax)
 
         cls._fields_ = list(fields)