diff --git a/pkgs/development/libraries/librdf/rasqal.nix b/pkgs/development/libraries/librdf/rasqal.nix
index ff3bcbfbd161..6b7e2fcd89da 100644
--- a/pkgs/development/libraries/librdf/rasqal.nix
+++ b/pkgs/development/libraries/librdf/rasqal.nix
@@ -14,6 +14,10 @@ stdenv.mkDerivation {
     pcre libxml2 
     ];
 
+  preConfigure = ''
+    export NIX_LDFLAGS="$NIX_LDFLAGS -lraptor"
+  '';
+
   meta = { 
     description = "library that handles Resource Description Framework (RDF)";
     homepage = "http://librdf.org/rasqal";