diff --git a/pkgs/applications/networking/mailreaders/mswatch/default.nix b/pkgs/applications/networking/mailreaders/mswatch/default.nix
index 4c16be2a65aa..2706b9c4597f 100644
--- a/pkgs/applications/networking/mailreaders/mswatch/default.nix
+++ b/pkgs/applications/networking/mailreaders/mswatch/default.nix
@@ -1,6 +1,6 @@
 { lib
 , stdenv
-, fetchzip
+, fetchsvn
 , pkg-config
 , autoreconfHook
 , bison
@@ -13,9 +13,10 @@ stdenv.mkDerivation {
   # Stable release won't compile successfully
   version = "unstable-2018-11-21";
 
-  src = fetchzip {
-    url = "https://sourceforge.net/code-snapshots/svn/m/ms/mswatch/code/mswatch-code-r369-trunk.zip";
-    hash = "sha256-czwwhchTizfgVmeknQGLijYgaFSP/45pD2yhDKj5BKw=";
+  src = fetchsvn {
+    url = "svn://svn.code.sf.net/p/mswatch/code/trunk";
+    rev = "369";
+    sha256 = "sha256-czwwhchTizfgVmeknQGLijYgaFSP/45pD2yhDKj5BKw=";
   };
   nativeBuildInputs = [
     pkg-config