diff --git a/diesel/src/pg/expression/expression_methods.rs b/diesel/src/pg/expression/expression_methods.rs
index 32e997f160f2..f23ad3c98737 100644
--- a/diesel/src/pg/expression/expression_methods.rs
+++ b/diesel/src/pg/expression/expression_methods.rs
@@ -874,6 +874,8 @@ pub trait PgRangeExpressionMethods: Expression + Sized {
     ///     .filter(age.contains(20))
     ///     .load::<i32>(conn)?;
     /// assert!(amazing_posts.is_empty());
+    ///
+    /// diesel::select((1..5).contains(4)).load::<bool>(conn).unwrap();
     /// #     Ok(())
     /// # }
     /// ```