diff --git a/pkgs/tools/security/prey/default.nix b/pkgs/tools/security/prey/default.nix
index 37416b4da1a4..fe71806301dd 100644
--- a/pkgs/tools/security/prey/default.nix
+++ b/pkgs/tools/security/prey/default.nix
@@ -1,10 +1,10 @@
 { stdenv, fetchurl, fetchgit, curl, scrot, imagemagick, xawtv, inetutils, makeWrapper, coreutils
-, apiKey ? null
-, deviceKey ? null }:
+, apiKey ? ""
+, deviceKey ? "" }:
 
 # TODO: this should assert keys are set, somehow if set through .override assertion fails
-#assert apiKey != null;
-#assert deviceKey != null;
+#assert apiKey != "";
+#assert deviceKey != "";
 
 let
   modulesSrc = fetchgit {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 97b3e50b6995..7677fcc75035 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1597,7 +1597,7 @@ let
 
   pptp = callPackage ../tools/networking/pptp {};
 
-  "prey-bash-client" = callPackage ../tools/security/prey { };
+  prey-bash-client = callPackage ../tools/security/prey { };
 
   proxychains = callPackage ../tools/networking/proxychains { };