diff --git a/pkgs/development/compilers/strategoxt/trunk.nix b/pkgs/development/compilers/strategoxt/trunk.nix
index 1462a364b18..0988e71cbea 100644
--- a/pkgs/development/compilers/strategoxt/trunk.nix
+++ b/pkgs/development/compilers/strategoxt/trunk.nix
@@ -7,6 +7,7 @@ stdenv.mkDerivation {
   src = fetchsvn {
     url = https://svn.cs.uu.nl:12443/repos/StrategoXT/trunk/StrategoXT;
     rev = "4792";
+    md5 = "0a7bba2cabfc7a9e2b9b5b43ddb3b7ad";
   };
 
   buildInputs = [autoconf automake libtool which aterm sdf];