diff --git a/pkgs/development/libraries/swiften/default.nix b/pkgs/development/libraries/swiften/default.nix
index 3978461d0ca..64ea6fa0e74 100644
--- a/pkgs/development/libraries/swiften/default.nix
+++ b/pkgs/development/libraries/swiften/default.nix
@@ -12,6 +12,7 @@ stdenv.mkDerivation rec {
   };
   
   buildPhase = ''
+    patchShebangs ./scons
     ./scons openssl=${openssl} \
             boost_includedir=${boost.dev}/include \
             boost_libdir=${boost.lib}/lib \