diff --git a/rsin_driver.hh b/rsin_driver.hh
index 8d0c3c7..fe930b6 100644
--- a/rsin_driver.hh
+++ b/rsin_driver.hh
@@ -45,7 +45,7 @@ class rsin_driver
     {
       this->opts = opts;
     };
-    void addFormRSCTLK(std::string *propertyName, FormRSCTLK *f)
+    void addFormRSCTLK(std::string propertyName, FormRSCTLK *f)
     {
       rsctlkform = f;
     };
diff --git a/rsin_parser.yy b/rsin_parser.yy
index efe08c0..81bfb68 100644
--- a/rsin_parser.yy
+++ b/rsin_parser.yy
@@ -32,7 +32,7 @@ class rsin_driver;
 %union
 {
     int ival;
-    std::string sval;
+    std::string *sval;
     FormRSCTLK *frsctlk;
     // Entity_f *ent;
     // Action_f *act;
@@ -82,7 +82,8 @@ system:
     | CONTEXTENTITIES LCB actionentities RCB system
 	| CONTEXTAUTOMATON LCB ctxaut RCB system
     | RSCTLKFORM LCB IDENTIFIER COL rsctlk_form RCB system {
-        driver.addFormRSCTLK($3, $5);
+        driver.addFormRSCTLK(*$3, $5);
+        free($3);
     }
     ;