diff --git a/pkgs/servers/dns/knot-dns/default.nix b/pkgs/servers/dns/knot-dns/default.nix
index 3ebb31e20f2..81e93f94f5c 100644
--- a/pkgs/servers/dns/knot-dns/default.nix
+++ b/pkgs/servers/dns/knot-dns/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
   CFLAGS = [ "-O2" "-DNDEBUG" ];
 
   doCheck = true;
-  doInstallCheck = false; # needs pykeymgr?
+  doInstallCheck = true;
 
   postInstall = ''
     rm -r "$out"/lib/*.la