diff --git a/pkgs/development/libraries/ti-rpc/default.nix b/pkgs/development/libraries/ti-rpc/default.nix
index c139b5be1027..d67d76185745 100644
--- a/pkgs/development/libraries/ti-rpc/default.nix
+++ b/pkgs/development/libraries/ti-rpc/default.nix
@@ -18,6 +18,7 @@ stdenv.mkDerivation rec {
                 '#if defined __APPLE_CC__ || defined __FreeBSD__ || !defined __GLIBC__'
   '';
 
+  KRB5_CONFIG = "${libkrb5.dev}/bin/krb5-config";
   nativeBuildInputs = [ autoreconfHook ];
   propagatedBuildInputs = [ libkrb5 ];