diff --git a/README.md b/README.md
index 0c799df..00232cd 100644
--- a/README.md
+++ b/README.md
@@ -68,11 +68,11 @@ let tokens = quote! {
     }
 
     impl #generics serde::Serialize for SerializeWith #generics #where_clause {
-        fn serialize<S>(&self, s: &mut S) -> Result<(), S::Error>
+        fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
         where
             S: serde::Serializer,
         {
-            #path(self.value, s)
+            #path(self.value, serializer)
         }
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index ccbb6ce..68a825b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -67,11 +67,11 @@
 //!     }
 //!
 //!     impl #generics serde::Serialize for SerializeWith #generics #where_clause {
-//!         fn serialize<S>(&self, s: &mut S) -> Result<(), S::Error>
+//!         fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
 //!         where
 //!             S: serde::Serializer,
 //!         {
-//!             #path(self.value, s)
+//!             #path(self.value, serializer)
 //!         }
 //!     }
 //!