diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/FunctionTests.java b/hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/FunctionTests.java
index 4f05ed67cb75..9b1ee6a76e41 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/FunctionTests.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/FunctionTests.java
@@ -2492,6 +2492,18 @@ public void testIn(SessionFactoryScope scope) {
 							session.createQuery("select 1 where 1 in (:list)", Integer.class)
 									.setParameterList("list",List.of())
 									.list().size() );
+					assertEquals( 1,
+							session.createQuery("select 1 where 1 in (:list)", Integer.class)
+									.setParameter("list",List.of(1))
+									.list().size() );
+					assertEquals( 0,
+							session.createQuery("select 1 where 1 in (:list)", Integer.class)
+									.setParameter("list",List.of())
+									.list().size() );
+					assertEquals( 0,
+							session.createQuery("select 1 where 1 in (:list)", Integer.class)
+									.setParameter("list",null)
+									.list().size() );
 					assertEquals( 1,
 							session.createQuery("select 1 where 1 in :list", Integer.class)
 									.setParameterList("list",List.of(1,2))