diff --git a/pkgs/applications/blockchains/monero-gui/default.nix b/pkgs/applications/blockchains/monero-gui/default.nix
index 9bf1ca586c2..5f430bc8869 100644
--- a/pkgs/applications/blockchains/monero-gui/default.nix
+++ b/pkgs/applications/blockchains/monero-gui/default.nix
@@ -10,15 +10,13 @@
 , randomx, zeromq, libgcrypt, libgpgerror
 , hidapi, rapidjson, quirc
 , trezorSupport ? true
-,   libusb1  ? null
-,   protobuf ? null
-,   python3  ? null
+,   libusb1
+,   protobuf
+,   python3
 }:
 
 with lib;
 
-assert trezorSupport -> all (x: x!=null) [ libusb1 protobuf python3 ];
-
 let
   arch = if stdenv.isx86_64  then "x86-64"
     else if stdenv.isi686    then "i686"