diff --git a/common.nix b/common.nix
index e5dca31..6ed75d5 100644
--- a/common.nix
+++ b/common.nix
@@ -31,8 +31,8 @@
   services.resolved = {
     enable = true;
     dnssec = "true";
-    domains = [ "~." ];
-    fallbackDns = [ "1.1.1.1#one.one.one.one" "1.0.0.1#one.one.one.one" ];
+    domains = ["~."];
+    fallbackDns = ["1.1.1.1#one.one.one.one" "1.0.0.1#one.one.one.one"];
     dnsovertls = "true";
   };
 
@@ -119,7 +119,12 @@
   users.groups.music = {};
 
   # Install firefox.
-  programs.firefox.enable = true;
+  programs.firefox = {
+    enable = true;
+    # fix wrong locale in calendar for nextcloud
+    # https://github.com/nextcloud/calendar/issues/6788
+    preferences."intl.regional_prefs.use_os_locales" = true;
+  };
 
   # chroot jail
   programs.firejail.enable = true;
@@ -337,8 +342,8 @@
   # bluetooth mpris play-pause media control
   systemd.user.services.mpris-proxy = {
     description = "Mpris proxy";
-    after = [ "network.target" "sound.target" ];
-    wantedBy = [ "default.target" ];
+    after = ["network.target" "sound.target"];
+    wantedBy = ["default.target"];
     serviceConfig.ExecStart = "${pkgs.bluez}/bin/mpris-proxy";
   };
 
diff --git a/home.nix b/home.nix
index c3691bc..dbbcb14 100644
--- a/home.nix
+++ b/home.nix
@@ -422,7 +422,7 @@ in {
       theme = lib.mkForce "modus_vivendi";
       editor = {
         cursor-shape = {
-         insert = "bar";
+          insert = "bar";
           normal = "block";
           select = "underline";
         };
@@ -442,7 +442,7 @@ in {
   };
 
   programs.starship = {
-    enable =  true;
+    enable = true;
     settings = {
       # short prompt timeout
       command_timeout = 30;