Index: generic/nsf.c
===================================================================
diff -u -N -r424b6e1fb16abbc4750efa768f5a52c5227b8734 -r76da43095b7249f7bb5fae80c989f9aa0182a487
--- generic/nsf.c	(.../nsf.c)	(revision 424b6e1fb16abbc4750efa768f5a52c5227b8734)
+++ generic/nsf.c	(.../nsf.c)	(revision 76da43095b7249f7bb5fae80c989f9aa0182a487)
@@ -22374,9 +22374,13 @@
   object = cd->object;
 
   if (objc > 2) {
+    Tcl_Obj *pathObj = NsfMethodNamePath(interp,
+                                         CallStackGetTclFrame(interp, NULL, 1),
+                                         NsfMethodName(objv[0]));
+    INCR_REF_COUNT(pathObj);
     result = NsfObjWrongArgs(interp, "wrong # args", object->cmdName,
-                             NsfMethodNamePath(interp, CallStackGetTclFrame(interp, NULL, 1),
-                                               NsfMethodName(objv[0])), "?value?");
+                             pathObj, "?value?");
+    DECR_REF_COUNT(pathObj);
   } else if (object == NULL) {
     result = NsfDispatchClientDataError(interp, clientData, "object", ObjStr(objv[0]));