Index: generic/nsf.c
===================================================================
diff -u -re05bd93d5bb5e91556f7adc13df27d9c4970c77a -r8e97011d5cc313b02f63d3282ce9b08b0a8e1746
--- generic/nsf.c	(.../nsf.c)	(revision e05bd93d5bb5e91556f7adc13df27d9c4970c77a)
+++ generic/nsf.c	(.../nsf.c)	(revision 8e97011d5cc313b02f63d3282ce9b08b0a8e1746)
@@ -8147,6 +8147,8 @@
       NsfObject *inst = (NsfObject *)Tcl_GetHashKey(tablePtr, hPtr);
       Command *cmdPtr;
 
+      assert(inst != NULL);
+
       if (unlikely((inst->flags & NSF_TCL_DELETE) != 0u)) {
         NsfLog(interp, NSF_LOG_NOTICE, "Object %s is apparently deleted", ObjectName(inst));
         continue;
@@ -8156,7 +8158,7 @@
       assert(cmdPtr != NULL);
 
       if (unlikely((cmdPtr->nsPtr->flags & NS_DYING) != 0u)) {
-        NsfLog(interp, NSF_LOG_WARN, "Namespace of %s is apparently deleted", ObjectName(inst));
+        NsfLog(interp, NSF_LOG_WARN, "Namespace of %s is apparently deleted", ObjectName_(inst));
         continue;
       }