diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3c1f7c8f7c1..efe3eae576a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -511,7 +511,7 @@ rec {
 
   gnupg = import ../tools/security/gnupg {
     inherit fetchurl stdenv readline;
-    ideaSupport = true; # enable for IDEA crypto support
+    ideaSupport = getConfig [ "gnupg" "idea" ] false; # enable for IDEA crypto support
   };
 
   gnupg2 = import ../tools/security/gnupg2 {