diff --git a/pkgs/development/libraries/kerberos/krb5.nix b/pkgs/development/libraries/kerberos/krb5.nix
index 647a6b031138..eeb09a68afbe 100644
--- a/pkgs/development/libraries/kerberos/krb5.nix
+++ b/pkgs/development/libraries/kerberos/krb5.nix
@@ -23,6 +23,8 @@ stdenv.mkDerivation (rec {
     cd ${name}/src
   '';
 
+  configureFlags = "--with-tcl=no";
+
   #doCheck = true; # report: No suitable file for testing purposes
 
   enableParallelBuilding = true;