Index: generic/nsf.c
===================================================================
diff -u -r770232a210b63fdafc5e5e4a2caf45fa5097c6fe -r4af989496f12c3dfdfcb428eb4a89508516c91b9
--- generic/nsf.c	(.../nsf.c)	(revision 770232a210b63fdafc5e5e4a2caf45fa5097c6fe)
+++ generic/nsf.c	(.../nsf.c)	(revision 4af989496f12c3dfdfcb428eb4a89508516c91b9)
@@ -20622,7 +20622,7 @@
       case RelationtypeClass_mixinIdx:
         return clopt ? MixinInfo(interp, clopt->classMixins, NULL, 1, NULL) : TCL_OK;
       case RelationtypeClass_filterIdx:
-        return objopt ? FilterInfo(interp, clopt->classFilters, NULL, 1, 0) : TCL_OK;
+        return clopt ? FilterInfo(interp, clopt->classFilters, NULL, 1, 0) : TCL_OK;
       }
     }