diff --git a/contrib/systemd/copyparty.service b/contrib/systemd/copyparty.service
index b4a17894..900065a5 100644
--- a/contrib/systemd/copyparty.service
+++ b/contrib/systemd/copyparty.service
@@ -12,7 +12,6 @@
 #   change '/mnt::rw' to another location or permission-set
 #   remove '-p 80,443,3923' to only listen on port 3923
 #   add '-i 127.0.0.1' to only allow local connections
-#   add '--use-fpool' if uploading into nfs locations
 #
 # with `Type=notify`, copyparty will signal systemd when it is ready to
 #   accept connections; correctly delaying units depending on copyparty.
diff --git a/copyparty/svchub.py b/copyparty/svchub.py
index 7e62aee3..5d226c42 100644
--- a/copyparty/svchub.py
+++ b/copyparty/svchub.py
@@ -57,8 +57,10 @@ class SvcHub(object):
         if args.log_thrs:
             start_log_thrs(self.log, args.log_thrs, 0)
 
-        if not ANYWIN and not args.use_fpool:
+        if not args.use_fpool and args.j != 1:
             args.no_fpool = True
+            m = "multithreading enabled with -j {}, so disabling fpool -- this can reduce upload performance on some filesystems"
+            self.log("root", m.format(args.j))
 
         if not args.no_fpool and args.j != 1:
             m = "WARNING: --use-fpool combined with multithreading is untested and can probably cause undefined behavior"