diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ebc133de7178..b12ac7fc2392 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -641,7 +641,7 @@ let pkgs = rec {
 
   gnupg = import ../tools/security/gnupg {
     inherit fetchurl stdenv readline;
-    ideaSupport = true; # enable for IDEA crypto support
+    ideaSupport = getPkgConfig "gnupg" "idea" false; # enable for IDEA crypto support
   };
 
   gnupg2 = import ../tools/security/gnupg2 {