Index: generic/nsf.c
===================================================================
diff -u -r0722c5e7a7d98ec23fcb8fdc55f528567c3bd3fa -rf0c21b811a657f7a7731e6218751544f612908f5
--- generic/nsf.c	(.../nsf.c)	(revision 0722c5e7a7d98ec23fcb8fdc55f528567c3bd3fa)
+++ generic/nsf.c	(.../nsf.c)	(revision f0c21b811a657f7a7731e6218751544f612908f5)
@@ -25025,7 +25025,7 @@
           if (paramsPtr->converterArg == NULL) {
             Tcl_SetObjResult(interp, Tcl_NewStringObj(what, -1));
           } else {
-            NsfPrintError(interp, "%s,type=%s", what, ObjStr(paramsPtr->converterArg));
+            Tcl_SetObjResult(interp, paramsPtr->converterArg);
           }
         } else {
           Tcl_SetObjResult(interp, Tcl_NewStringObj(paramsPtr->type, -1));