diff --git a/pkgs/development/libraries/gpgme/default.nix b/pkgs/development/libraries/gpgme/default.nix
index 405814e19a9..75b13b6b7ef 100644
--- a/pkgs/development/libraries/gpgme/default.nix
+++ b/pkgs/development/libraries/gpgme/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
     libassuan
     libgpg-error
     pth
-  ] ++ lib.optional (qtbase != null) [
+  ] ++ lib.optionals (qtbase != null) [
     qtbase
   ];