diff --git a/flake.nix b/flake.nix
index 5eb5e91..98211a5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -170,7 +170,7 @@
         ./nixos/overlays/fixup-nheko
         ./nixos/overlays/fixup-signal
         ./nixos/overlays/fixup-imhex.nix
-        ./nixos/overlays/customize-gajim
+#./nixos/overlays/customize-gajim
         ./nixos/overlays/sddm-no-vnc.nix
         ./nixos/overlays/fixup-armcord.nix
         ./nixos/overlays/jd-gui-wayland.nix
diff --git a/nixos/configuration.linux.nix b/nixos/configuration.linux.nix
index b74dc5f..c59fcaf 100644
--- a/nixos/configuration.linux.nix
+++ b/nixos/configuration.linux.nix
@@ -16,7 +16,7 @@
   # Generic system settings.
   #
   time.timeZone = "Europe/Amsterdam";
-  i18n.defaultLocale = "nl_NL.utf8";
+  i18n.defaultLocale = "nl_NL.UTF-8";
 
   # Allow use of e.g. 'nix search' and flakes.
   nix.settings.experimental-features = [
diff --git a/nixos/packages/default.pkgs.nix b/nixos/packages/default.pkgs.nix
index bb55fe3..2dea961 100644
--- a/nixos/packages/default.pkgs.nix
+++ b/nixos/packages/default.pkgs.nix
@@ -158,7 +158,7 @@ with pkgs;
 
   # Development.
   colmena
-  rustup
+  (rustup.overrideAttrs { doCheck = false; })
   clang
   clang-tools
   flatbuffers