diff --git a/hibernate-core/src/test/java/org/hibernate/test/annotations/manytoone/NotNullManyToOneTest.java b/hibernate-core/src/test/java/org/hibernate/test/annotations/manytoone/NotNullManyToOneTest.java
new file mode 100644
index 0000000000..818f2454af
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/test/annotations/manytoone/NotNullManyToOneTest.java
@@ -0,0 +1,93 @@
+package org.hibernate.test.annotations.manytoone;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+import javax.validation.constraints.NotNull;
+
+import org.hibernate.cfg.AvailableSettings;
+import org.hibernate.cfg.Configuration;
+import org.hibernate.cfg.beanvalidation.ValidationMode;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
+import org.junit.Test;
+
+/**
+ * @author Andrea Boriero
+ */
+@TestForIssue(jiraKey = "HHH-13959")
+public class NotNullManyToOneTest extends BaseCoreFunctionalTestCase {
+
+	@Override
+	protected void configure(Configuration configuration) {
+		configuration.setProperty( AvailableSettings.JPA_VALIDATION_MODE, ValidationMode.AUTO.name() );
+	}
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] {
+				Parent.class,
+				Child.class
+		};
+	}
+
+	@Test
+	public void testSave() {
+		inTransaction(
+				session -> {
+					Parent parent = new Parent( new Child() );
+					session.save( parent );
+				}
+		);
+	}
+
+	@Test(expected = javax.validation.ConstraintViolationException.class)
+	public void testSaveChildWithoutParent() {
+		inTransaction(
+				session -> {
+					Child child = new Child();
+					session.save( child );
+				}
+		);
+	}
+
+	@Entity(name = "Child")
+	public static class Child {
+
+		@Id
+		@GeneratedValue(strategy = GenerationType.IDENTITY)
+		private Long id;
+
+		@NotNull
+		@ManyToOne
+		private Parent parent;
+
+		public void setParent(Parent parent) {
+			this.parent = parent;
+		}
+	}
+
+	@Entity(name = "Parent")
+	public static class Parent {
+
+		@Id
+		@GeneratedValue(strategy = GenerationType.IDENTITY)
+		private Long id;
+
+		@ManyToOne(cascade = CascadeType.ALL)
+		private Child child;
+
+		public Parent(Child child) {
+			this.child = child;
+			this.child.setParent( this );
+		}
+
+		public Child getChild() {
+			return child;
+		}
+	}
+}