diff --git a/pkgs/development/libraries/buddy/default.nix b/pkgs/development/libraries/buddy/default.nix
index a8555a349d0..fb25b0a5810 100644
--- a/pkgs/development/libraries/buddy/default.nix
+++ b/pkgs/development/libraries/buddy/default.nix
@@ -11,6 +11,9 @@ stdenv.mkDerivation rec {
   buildInputs = [ bison ];
   patches = [ ./gcc-4.3.3-fixes.patch ];
   configureFlags = [ "CFLAGS=-O3" "CXXFLAGS=-O3" ];
+  NIX_LDFLAGS = [
+    "-lm"
+  ];
   doCheck = true;
 
   meta = {