diff --git a/ass1-jpa/src/main/java/dst/ass1/jpa/model/impl/Driver.java b/ass1-jpa/src/main/java/dst/ass1/jpa/model/impl/Driver.java
index ff1e142..452b771 100644
--- a/ass1-jpa/src/main/java/dst/ass1/jpa/model/impl/Driver.java
+++ b/ass1-jpa/src/main/java/dst/ass1/jpa/model/impl/Driver.java
@@ -11,7 +11,7 @@ public class Driver extends PlatformUser implements IDriver {
     @OneToMany(targetEntity = Match.class)
     private Collection<IMatch> matches = new ArrayList<>();
 
-    @ManyToOne(targetEntity = Vehicle.class)
+    @ManyToOne(targetEntity = Vehicle.class, optional = false)
     private IVehicle vehicle;
 
     @OneToMany(targetEntity = Employment.class)