Index: generic/nsf.c
===================================================================
diff -u -r9cead8929011bb4dcc6c44630a91bc5d597520b2 -r23493dd35ef492636e881b846c4eb56e9a609944
--- generic/nsf.c	(.../nsf.c)	(revision 9cead8929011bb4dcc6c44630a91bc5d597520b2)
+++ generic/nsf.c	(.../nsf.c)	(revision 23493dd35ef492636e881b846c4eb56e9a609944)
@@ -5815,7 +5815,7 @@
   AssertionRemoveProc(aStore, name);
   procs->pre = AssertionNewList(interp, pre);
   procs->post = AssertionNewList(interp, post);
-  assert(aStore->procs);
+  assert(aStore);
   hPtr = Tcl_CreateHashEntry(&aStore->procs, name, &new);
   if (new) {
     Tcl_SetHashValue(hPtr, procs);