diff --git a/utils/lit/lit/ShUtil.py b/utils/lit/lit/ShUtil.py
index c4bbb3d3731..c8f933245d3 100644
--- a/utils/lit/lit/ShUtil.py
+++ b/utils/lit/lit/ShUtil.py
@@ -66,7 +66,7 @@ class ShLexer:
                 return (tok[0], num)                    
             elif c == '"':
                 self.eat()
-                str += self.lex_arg_quoted('"')
+                str += self.lex_arg_quoted('"')
             elif not self.win32Escapes and c == '\\':
                 # Outside of a string, '\\' escapes everything.
                 self.eat()