diff --git a/pkgs/tools/networking/nttcp/default.nix b/pkgs/tools/networking/nttcp/default.nix
index 8979c5fd2acf..c5a4c4c1cd1f 100644
--- a/pkgs/tools/networking/nttcp/default.nix
+++ b/pkgs/tools/networking/nttcp/default.nix
@@ -1,11 +1,11 @@
-{ lib, stdenv, fetchurl, ... }:
+{ lib, stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
   pname = "nttcp";
   version = "1.47";
 
   src = fetchurl {
-    url = "http://deb.debian.org/debian/pool/non-free/n/nttcp/nttcp_${version}.orig.tar.gz";
+    url = "https://deb.debian.org/debian/pool/non-free/n/nttcp/nttcp_${version}.orig.tar.gz";
     sha256 = "1bl17dsd53lbpjdqfmpgpd7dms6d2w3scpg7ki7qgfjhs8sarq50";
   };