diff --git a/pkgs/development/compilers/webdsl/default.nix b/pkgs/development/compilers/webdsl/default.nix
index b482741ec77..e99456b5d2f 100644
--- a/pkgs/development/compilers/webdsl/default.nix
+++ b/pkgs/development/compilers/webdsl/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://buildfarm.st.ewi.tudelft.nl/releases/strategoxt/webdsl-8.2pre1006-c8h623yn/webdsl-8.2.tar.gz
+    url = http://buildfarm.st.ewi.tudelft.nl/releases/strategoxt/webdsl-8.2pre1006-c8h623yn/webdsl-8.2.tar.gz;
     md5 = "07c2471c961acc6467c55594e49da7c1";
   };