diff --git a/pkgs/applications/window-managers/larswm/default.nix b/pkgs/applications/window-managers/larswm/default.nix
index cac5e155f13c..010a00b8fab9 100644
--- a/pkgs/applications/window-managers/larswm/default.nix
+++ b/pkgs/applications/window-managers/larswm/default.nix
@@ -2,7 +2,11 @@
 
 stdenv.mkDerivation {
   name = "larswm-7.5.3";
-  src = /home/viric/larswm-7.5.3.tar.gz;
+
+  src = fetchurl {
+    url = mirror://sourceforge/larswm/larswm-7.5.3.tar.gz;
+    sha256 = "1xmlx9g1nhklxjrg0wvsya01s4k5b9fphnpl9zdwp29mm484ni3v";
+  };
 
   buildInputs = [ imake libX11 libXext libXmu ];