diff --git a/modules/postgresql.nix b/modules/postgresql.nix
index bced82f..9b99bae 100644
--- a/modules/postgresql.nix
+++ b/modules/postgresql.nix
@@ -52,7 +52,7 @@ in
       dbConfig = passwordCfgs: {
         services.postgresql.enable = (builtins.length passwordCfgs) > 0;
         services.postgresql.ensureDatabases = map ({ database, ... }: database) passwordCfgs;
-        services.postgresql.Users = map ({ username, database, ... }: {
+        services.postgresql.ensureUsers = map ({ username, database, ... }: {
           name = username;
           ensurePermissions = {
             "DATABASE ${database}" = "ALL PRIVILEGES";
diff --git a/test/modules/postgresql.nix b/test/modules/postgresql.nix
index f76889d..462ba78 100644
--- a/test/modules/postgresql.nix
+++ b/test/modules/postgresql.nix
@@ -28,7 +28,7 @@ in
     expected = {
       services.postgresql = {
         enable = false;
-        Users = [];
+        ensureUsers = [];
         ensureDatabases = [];
       };
       systemd.services.postgresql.postStart = "";
@@ -40,7 +40,7 @@ in
     expected = {
       services.postgresql = {
         enable = true;
-        Users = [{
+        ensureUsers = [{
           name = "myuser";
           ensurePermissions = {
             "DATABASE mydatabase" = "ALL PRIVILEGES";
@@ -67,7 +67,7 @@ in
     expected = {
       services.postgresql = {
         enable = true;
-        Users = [{
+        ensureUsers = [{
           name = "myuser";
           ensurePermissions = {
             "DATABASE mydatabase" = "ALL PRIVILEGES";
@@ -104,7 +104,7 @@ in
     expected = {
       services.postgresql = {
         enable = false;
-        Users = [];
+        ensureUsers = [];
         ensureDatabases = [];
         
         enableTCPIP = true;