diff --git a/preprocessor/DynareBison.yy b/preprocessor/DynareBison.yy
index 439c7532e706b37f9bbd450469803a6bf1b21c2e..864ffd3ab786a6cb8305a267a6de59bb5da6f591 100644
--- a/preprocessor/DynareBison.yy
+++ b/preprocessor/DynareBison.yy
@@ -1624,7 +1624,7 @@ o_vlist : VLIST EQUAL INT_NUMBER {driver.option_num("ms.vlist",$3); };
 o_vlistlog : VLISTLOG EQUAL INT_NUMBER {driver.option_num("ms.vlistlog",$3); };
 o_vlistper : VLISTPER EQUAL INT_NUMBER {driver.option_num("ms.vlistper",$3); };
 o_varlist : VARLIST EQUAL '(' symbol_list ')' {driver.option_symbol_list("ms.varlist"); };
-o_restriction_fname : RESTRICTION_FNAME EQUAL '(' symbol_list ')' {driver.option_symbol_list("ms.restriction_fname"); };
+o_restriction_fname : RESTRICTION_FNAME EQUAL symbol {driver.option_str("ms.restriction_fname",$3); };
 o_nlags : NLAGS EQUAL INT_NUMBER {driver.option_num("ms.nlags",$3); };
 o_cross_restrictions : CROSS_RESTRICTIONS EQUAL INT_NUMBER {driver.option_num("ms.cross_restrictions",$3); };
 o_contemp_reduced_form : CONTEMP_REDUCED_FORM EQUAL INT_NUMBER {driver.option_num("ms.contemp_reduced_form",$3); };