Index: generic/nsf.c
===================================================================
diff -u -N -r1eaf0a30c93b25b5dd1f4a251cde5f9101a5fc6f -rc0e105342a08c35b70fb9edd30983dbc3a93ae2f
--- generic/nsf.c	(.../nsf.c)	(revision 1eaf0a30c93b25b5dd1f4a251cde5f9101a5fc6f)
+++ generic/nsf.c	(.../nsf.c)	(revision c0e105342a08c35b70fb9edd30983dbc3a93ae2f)
@@ -10907,7 +10907,7 @@
           result = NsfMethodAliasCmd(interp, defObject, 0, methodName, 0,
                                          ProtectionRedefine_protectedIdx, osPtr->handles[i]);
 
-          if (result != TCL_OK) {
+          if (unlikely(result != TCL_OK)) {
             /* alias definition failed */
             NsfLog(interp, NSF_LOG_WARN, "Could not define alias %s for %s",
                    ObjStr(osPtr->handles[i]), Nsf_SystemMethodOpts[i]);