diff --git a/tests/ui/ptr_cast_constness.fixed b/tests/ui/ptr_cast_constness.fixed
index 36304e4a0f0..ba3eca061df 100644
--- a/tests/ui/ptr_cast_constness.fixed
+++ b/tests/ui/ptr_cast_constness.fixed
@@ -2,7 +2,7 @@
 //@aux-build:proc_macros.rs
 
 #![warn(clippy::ptr_cast_constness)]
-#![allow(clippy::transmute_ptr_to_ref, unused)]
+#![allow(clippy::transmute_ptr_to_ref, clippy::unnecessary_cast, unused)]
 
 extern crate proc_macros;
 use proc_macros::{external, inline_macros};
diff --git a/tests/ui/ptr_cast_constness.rs b/tests/ui/ptr_cast_constness.rs
index 315e828bebe..adeb43edf68 100644
--- a/tests/ui/ptr_cast_constness.rs
+++ b/tests/ui/ptr_cast_constness.rs
@@ -2,7 +2,7 @@
 //@aux-build:proc_macros.rs
 
 #![warn(clippy::ptr_cast_constness)]
-#![allow(clippy::transmute_ptr_to_ref, unused)]
+#![allow(clippy::transmute_ptr_to_ref, clippy::unnecessary_cast, unused)]
 
 extern crate proc_macros;
 use proc_macros::{external, inline_macros};