diff --git a/pkgs/applications/networking/mailreaders/mutt/default.nix b/pkgs/applications/networking/mailreaders/mutt/default.nix
index dfa92fc42c98..91a424d9eb12 100644
--- a/pkgs/applications/networking/mailreaders/mutt/default.nix
+++ b/pkgs/applications/networking/mailreaders/mutt/default.nix
@@ -18,6 +18,8 @@
 , gssSupport   ? true
 , writeScript
 }:
+assert smimeSupport -> sslSupport;
+assert gpgmeSupport -> sslSupport;
 
 stdenv.mkDerivation rec {
   pname = "mutt";