diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/AuthenticationController.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/AuthenticationController.java
index 19e4f6f..dd23fba 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/AuthenticationController.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/AuthenticationController.java
@@ -43,7 +43,8 @@ public class AuthenticationController {
     }
 
     @PostMapping("/login")
-    public JWTResponse login(@RequestBody JWTRequest authenticationRequest) throws Exception {
+    public JWTResponse login(@Valid @RequestBody JWTRequest authenticationRequest)
+            throws Exception {
         if (authenticationRequest.getUsernameOrEmail().contains("@")) {
             // usernameOrEmail contains an email, so fetch the corresponding username
             final User user =