diff --git a/pkgs/applications/misc/gnuradio/default.nix b/pkgs/applications/misc/gnuradio/default.nix
index a7c00cceaa7..f9a50313c47 100644
--- a/pkgs/applications/misc/gnuradio/default.nix
+++ b/pkgs/applications/misc/gnuradio/default.nix
@@ -50,6 +50,10 @@ stdenv.mkDerivation rec {
     Mako cheetah numpy scipy matplotlib pyqt4 pygtk wxPython pyopengl
   ];
 
+  NIX_LDFLAGS = [
+    "-lpthread"
+  ];
+
   enableParallelBuilding = true;
 
   postPatch = ''