diff --git a/pkgs/tools/misc/bmon/default.nix b/pkgs/tools/misc/bmon/default.nix
index d99cce78bbf..a98b2075ada 100644
--- a/pkgs/tools/misc/bmon/default.nix
+++ b/pkgs/tools/misc/bmon/default.nix
@@ -16,6 +16,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ ncurses libconfuse libnl ];
 
+  preConfigure = ''
+    # Must be an absolute path
+    export PKG_CONFIG="$(command -v "$PKG_CONFIG")"
+  '';
+
   meta = with stdenv.lib; {
     description = "Network bandwidth monitor";
     homepage = "https://github.com/tgraf/bmon";