diff --git a/pkgs/development/libraries/webkitgtk/2.14.nix b/pkgs/development/libraries/webkitgtk/2.14.nix
index fca358ed430562..7439d72151dd24 100644
--- a/pkgs/development/libraries/webkitgtk/2.14.nix
+++ b/pkgs/development/libraries/webkitgtk/2.14.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   # XXX: WebKit2 missing include path for gst-plugins-base.
   # Filled: https://bugs.webkit.org/show_bug.cgi?id=148894
-  #NIX_CFLAGS_COMPILE = "-I${gst-plugins-base.dev}/include/gstreamer-1.0";
+  NIX_CFLAGS_COMPILE = "-I${gst-plugins-base.dev}/include/gstreamer-1.0";
 
   nativeBuildInputs = [
     cmake perl python ruby bison gperf sqlite