diff --git a/serde_with/src/serde_conv.rs b/serde_with/src/serde_conv.rs
index 39b3f63a..2ac60146 100644
--- a/serde_with/src/serde_conv.rs
+++ b/serde_with/src/serde_conv.rs
@@ -112,6 +112,7 @@ macro_rules! serde_conv {
 
         const _:() = {
             impl $m {
+                #[allow(clippy::ptr_arg)]
                 $vis fn serialize<S>(x: &$t, serializer: S) -> $crate::__private__::Result<S::Ok, S::Error>
                 where
                     S: $crate::serde::Serializer,