diff --git a/src/macro/Tokenizer.ll b/src/macro/Tokenizer.ll
index 4d646878c34bc57c91432b442a54765d5a5bdf7d..3ee50abccb7f2507ae0ddaf490494584e6bf8eab 100644
--- a/src/macro/Tokenizer.ll
+++ b/src/macro/Tokenizer.ll
@@ -169,7 +169,7 @@ CONT \\\\{SPC}*
   return token::NAME;
 }
 
-<expr,eval>\"[^\"]+\" {
+<expr,eval>\"[^\"]*\" {
   yylval->build<string>(yytext + 1).pop_back();
   return token::QUOTED_STRING;
 }