diff --git a/src/afs/DARWIN/osi_module.c b/src/afs/DARWIN/osi_module.c
index 020518bb01..f254ccf512 100644
--- a/src/afs/DARWIN/osi_module.c
+++ b/src/afs/DARWIN/osi_module.c
@@ -115,6 +115,8 @@ afs_modunload(struct kmod_info * kmod_info, void *data)
 {
     if (afs_globalVFS)
 	return KERN_FAILURE;
+    if ((afs_initState != 0) || (afs_shuttingdown))
+	return KERN_FAILURE;
 #ifdef AFS_DARWIN80_ENV
     if (vfs_fsremove(afs_vfstable))
 	return KERN_FAILURE;