diff --git a/schrottserver/synapse.nix b/schrottserver/synapse.nix
index 9d96080..0d575a4 100644
--- a/schrottserver/synapse.nix
+++ b/schrottserver/synapse.nix
@@ -1,10 +1,33 @@
 { pkgs, ... }:
 {
-  services.matrix-synapse = {
-    enable = true;
-    settings = {
-      server_name = "synapse.schrottkatze.de";
-      max_upload_size = "2G";
+  services = {
+    matrix-synapse = {
+      enable = true;
+      settings = {
+        server_name = "synapse.schrottkatze.de";
+      };
+    };
+    postgresql = {
+      enable = true;
+      initialScript = pkgs.writeText "synapse-init.sql" ''
+        CREATE ROLE "matrix-synapse";
+        CREATE DATABASE "matrix-synapse" WITH OWNER "matrix-synapse"
+          TEMPLATE template0
+          LC_COLLATE = "C"
+          LC_CTYPE = "C";
+      '';
+
+      #initdbArgs = [
+        #"--locale=C"
+        #"--encoding=UTF8"
+      #];
+      ensureDatabases = [ "matrix-synapse" ];
+      ensureUsers = [
+        { 
+          name = "matrix-synapse";
+          ensurePermissions."DATABASE \"matrix-synapse\"" = "ALL PRIVILEGES";
+        }
+      ];
     };
   };
 }