diff --git a/quill-jdbc/src/test/scala/io/getquill/context/jdbc/postgres/PeopleJdbcSpec.scala b/quill-jdbc/src/test/scala/io/getquill/context/jdbc/postgres/PeopleJdbcSpec.scala
index b57a70b4b7..a14862b6a1 100644
--- a/quill-jdbc/src/test/scala/io/getquill/context/jdbc/postgres/PeopleJdbcSpec.scala
+++ b/quill-jdbc/src/test/scala/io/getquill/context/jdbc/postgres/PeopleJdbcSpec.scala
@@ -57,4 +57,8 @@ class PeopleJdbcSpec extends PeopleSpec {
     testContext.run(`Ex 10 page 1 query`) mustEqual `Ex 10 page 1 expected`
     testContext.run(`Ex 10 page 2 query`) mustEqual `Ex 10 page 2 expected`
   }
+
+  "Example 11 - contains + isEmpty" in {
+    testContext.run(`Ex 11 contains`(`Ex 9 param`)) mustEqual `Ex 9 expected result`
+  }
 }
diff --git a/quill-sql/src/test/scala/io/getquill/context/sql/PeopleSpec.scala b/quill-sql/src/test/scala/io/getquill/context/sql/PeopleSpec.scala
index e1bda092cd..4c39c0a9c0 100644
--- a/quill-sql/src/test/scala/io/getquill/context/sql/PeopleSpec.scala
+++ b/quill-sql/src/test/scala/io/getquill/context/sql/PeopleSpec.scala
@@ -131,6 +131,15 @@ trait PeopleSpec extends Spec {
         query[Person].filter(p => set.contains(p.age))
     }
 
+  def `Ex 11 contains`(set: Set[Int]) = quote {
+    query[Person].filter { p =>
+      if (liftQuery(set).isEmpty)
+        true
+      else
+        liftQuery(set).contains(p.age)
+    }
+  }
+
   val `Ex 8 param` = Set.empty[Int]
   val `Ex 8 expected result` = List.empty[Person]