diff --git a/pkgs/applications/audio/codecserver/default.nix b/pkgs/applications/audio/codecserver/default.nix
index 8a5c3d842d4d..d1bcf82115ef 100644
--- a/pkgs/applications/audio/codecserver/default.nix
+++ b/pkgs/applications/audio/codecserver/default.nix
@@ -24,6 +24,12 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ protobuf ];
 
+  postFixup = ''
+    substituteInPlace "$out"/lib/pkgconfig/codecserver.pc \
+      --replace '=''${prefix}//' '=/' \
+      --replace '=''${exec_prefix}//' '=/'
+  '';
+
   meta = with lib; {
     homepage = "https://github.com/jketterl/codecserver";
     description = "Modular audio codec server";