diff --git a/api/src/Controllers/UsersController.cs b/api/src/Controllers/UsersController.cs
index b1e0519..108f929 100644
--- a/api/src/Controllers/UsersController.cs
+++ b/api/src/Controllers/UsersController.cs
@@ -44,7 +44,7 @@ public class UsersController : ControllerBase {
 
     [Authorize(Policy = "SensitiveDataRead")]
     [HttpGet("{id:int}")]
-    public async Task<ActionResult<User>> getUser(int id) {
+    public async Task<ActionResult<User>> getUser(Guid id) {
 
         var user = await service_.Get(id);
 
@@ -62,7 +62,7 @@ public class UsersController : ControllerBase {
 
     [Authorize(Policy = "SensitiveDataModify")]
     [HttpDelete("{id}")]
-    public async Task<ActionResult> deleteUser(int id) {
+    public async Task<ActionResult> deleteUser(Guid id) {
 
         var success = await service_.Delete(id);
 
diff --git a/api/src/Services/UserService.cs b/api/src/Services/UserService.cs
index 6bf5b8d..8f77a26 100644
--- a/api/src/Services/UserService.cs
+++ b/api/src/Services/UserService.cs
@@ -17,7 +17,7 @@ public class UserService {
         return await db_.Users.ToListAsync();
     }
 
-    public async Task<User?> Get(int id) {
+    public async Task<User?> Get(Guid id) {
         return await db_.Users.FindAsync(id);
     }
 
@@ -25,7 +25,7 @@ public class UserService {
         return await db_.Users.FirstOrDefaultAsync(u => u.UserName == name);
     }
 
-    public async Task<bool> Delete(int id) {
+    public async Task<bool> Delete(Guid id) {
         User? User = await db_.Users.FindAsync(id);
         if(User != null) {
             db_.Users.Remove(User);