diff --git a/serde_derive/src/ser.rs b/serde_derive/src/ser.rs
index d5ae1401..0c4c26d4 100644
--- a/serde_derive/src/ser.rs
+++ b/serde_derive/src/ser.rs
@@ -27,7 +27,10 @@ pub fn expand_derive_serialize(input: &syn::DeriveInput) -> Result<TokenStream,
     let params = Parameters::new(&cont);
     let (impl_generics, ty_generics, where_clause) = params.generics.split_for_impl();
     let suffix = ident.to_string().trim_left_matches("r#").to_owned();
-    let dummy_const = Ident::new(&format!("_IMPL_SERIALIZE_FOR_{}", suffix), Span::call_site());
+    let dummy_const = Ident::new(
+        &format!("_IMPL_SERIALIZE_FOR_{}", suffix),
+        Span::call_site(),
+    );
     let body = Stmts(serialize_body(&cont, &params));
 
     let impl_block = if let Some(remote) = cont.attrs.remote() {
diff --git a/test_suite/tests/unstable/mod.rs b/test_suite/tests/unstable/mod.rs
index 0a8a3330..9aba301c 100644
--- a/test_suite/tests/unstable/mod.rs
+++ b/test_suite/tests/unstable/mod.rs
@@ -13,15 +13,17 @@ fn test_raw_identifiers() {
     #[derive(Debug, PartialEq, Serialize, Deserialize)]
     #[allow(non_camel_case_types)]
     enum r#type {
-        r#type {
-            r#type: (),
-        }
+        r#type { r#type: () },
     }
 
     assert_tokens(
         &r#type::r#type { r#type: () },
         &[
-            Token::StructVariant { name: "type", variant: "type", len: 1 },
+            Token::StructVariant {
+                name: "type",
+                variant: "type",
+                len: 1,
+            },
             Token::Str("type"),
             Token::Unit,
             Token::StructVariantEnd,