diff --git a/pkgs/development/libraries/ldns/default.nix b/pkgs/development/libraries/ldns/default.nix
index e9d81d3ab78..c4120e5bb0e 100644
--- a/pkgs/development/libraries/ldns/default.nix
+++ b/pkgs/development/libraries/ldns/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, openssl, perl, dns-root-data }:
+{ stdenv, fetchurl, fetchpatch, openssl, perl, which, dns-root-data }:
 
 stdenv.mkDerivation rec {
   pname = "ldns";
@@ -45,6 +45,9 @@ stdenv.mkDerivation rec {
     "ac_cv_func_realloc_0_nonnull=yes"
   ];
 
+  checkInputs = [ which ];
+  doCheck = false; # fails. missing some files
+
   postInstall = ''
     moveToOutput "bin/ldns-config" "$dev"