diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/dto/CurtainsSaveRequest.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/dto/CurtainsSaveRequest.java
index 876d770..1dc9122 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/dto/CurtainsSaveRequest.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/dto/CurtainsSaveRequest.java
@@ -1,13 +1,18 @@
 package ch.usi.inf.sa4.sanmarinoes.smarthut.dto;
 
+import javax.validation.constraints.Max;
+import javax.validation.constraints.Min;
 import javax.validation.constraints.NotNull;
 
 public class CurtainsSaveRequest {
     /** The state of this switch */
+    @NotNull
+    @Min(0)
+    @Max(100)
     private int openedAmount;
 
     /** Device identifier */
-    private long id;
+    @NotNull private long id;
 
     /**
      * The room this device belongs in, as a foreign key id. To use when updating and inserting from