diff --git a/serde_derive/src/de.rs b/serde_derive/src/de.rs
index 8a9cde89..df16e8ef 100644
--- a/serde_derive/src/de.rs
+++ b/serde_derive/src/de.rs
@@ -566,16 +566,14 @@ fn deserialize_seq(
         }
     });
 
-    // FIXME: parentheses around field values are because of
-    // https://github.com/rust-lang/rust/issues/47311
     let mut result = if is_struct {
         let names = fields.iter().map(|f| &f.ident);
         quote_spanned! {Span::call_site()=>
-            #type_path { #( #names: (#vars) ),* }
+            #type_path { #( #names: #vars ),* }
         }
     } else {
         quote_spanned! {Span::call_site()=>
-            #type_path ( #((#vars)),* )
+            #type_path ( #(#vars),* )
         }
     };
 
@@ -718,9 +716,7 @@ fn deserialize_newtype_struct(type_path: &Tokens, params: &Parameters, field: &F
         }
     };
 
-    // FIXME: parentheses around field values are because of
-    // https://github.com/rust-lang/rust/issues/47311
-    let mut result = quote_spanned!(Span::call_site()=> #type_path((#value)));
+    let mut result = quote_spanned!(Span::call_site()=> #type_path(#value));
     if params.has_getter {
         let this = &params.this;
         result = quote! {
@@ -2054,15 +2050,13 @@ fn deserialize_map(
             }
         });
 
-    // FIXME: parentheses around field values are because of
-    // https://github.com/rust-lang/rust/issues/47311
     let result = fields_names.iter().map(|&(field, ref name)| {
         let ident = field.ident.expect("struct contains unnamed fields");
         if field.attrs.skip_deserializing() {
             let value = Expr(expr_is_missing(field, cattrs));
-            quote_spanned!(Span::call_site()=> #ident: (#value))
+            quote_spanned!(Span::call_site()=> #ident: #value)
         } else {
-            quote_spanned!(Span::call_site()=> #ident: (#name))
+            quote_spanned!(Span::call_site()=> #ident: #name)
         }
     });
 
diff --git a/test_suite/no_std/src/main.rs b/test_suite/no_std/src/main.rs
index f0737937..bcd5c480 100644
--- a/test_suite/no_std/src/main.rs
+++ b/test_suite/no_std/src/main.rs
@@ -9,10 +9,6 @@
 #![feature(lang_items, start, compiler_builtins_lib)]
 #![no_std]
 
-// https://github.com/rust-lang/rust/issues/47311
-#![allow(unused_parens)]
-#![cfg_attr(feature = "cargo-clippy", allow(double_parens))]
-
 extern crate libc;
 extern crate compiler_builtins;
 
diff --git a/test_suite/tests/test_annotations.rs b/test_suite/tests/test_annotations.rs
index 8bbda0fa..48a09a1a 100644
--- a/test_suite/tests/test_annotations.rs
+++ b/test_suite/tests/test_annotations.rs
@@ -8,10 +8,6 @@
 
 #![cfg_attr(feature = "cargo-clippy", allow(cast_lossless))]
 
-// https://github.com/rust-lang/rust/issues/47311
-#![allow(unused_parens)]
-#![cfg_attr(feature = "cargo-clippy", allow(double_parens))]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index f1d2b99c..3c42667d 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -6,9 +6,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// https://github.com/rust-lang/rust/issues/47311
-#![allow(unused_parens)]
-#![cfg_attr(feature = "cargo-clippy", allow(decimal_literal_representation, double_parens))]
+#![cfg_attr(feature = "cargo-clippy", allow(decimal_literal_representation))]
 
 #[macro_use]
 extern crate serde_derive;
diff --git a/test_suite/tests/test_gen.rs b/test_suite/tests/test_gen.rs
index 2e3cab4a..5f0fd696 100644
--- a/test_suite/tests/test_gen.rs
+++ b/test_suite/tests/test_gen.rs
@@ -13,10 +13,6 @@
 #![deny(warnings)]
 #![cfg_attr(feature = "unstable", feature(non_ascii_idents))]
 
-// https://github.com/rust-lang/rust/issues/47311
-#![allow(unused_parens)]
-#![cfg_attr(feature = "cargo-clippy", allow(double_parens))]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/test_suite/tests/test_macros.rs b/test_suite/tests/test_macros.rs
index 5dd489e0..ca38cbd7 100644
--- a/test_suite/tests/test_macros.rs
+++ b/test_suite/tests/test_macros.rs
@@ -8,9 +8,7 @@
 
 #![deny(trivial_numeric_casts)]
 
-// https://github.com/rust-lang/rust/issues/47311
-#![allow(unused_parens)]
-#![cfg_attr(feature = "cargo-clippy", allow(double_parens, redundant_field_names))]
+#![cfg_attr(feature = "cargo-clippy", allow(redundant_field_names))]
 
 #[macro_use]
 extern crate serde_derive;
diff --git a/test_suite/tests/test_remote.rs b/test_suite/tests/test_remote.rs
index a4c3a89b..ccb0bd88 100644
--- a/test_suite/tests/test_remote.rs
+++ b/test_suite/tests/test_remote.rs
@@ -6,9 +6,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// https://github.com/rust-lang/rust/issues/47311
-#![allow(unused_parens)]
-#![cfg_attr(feature = "cargo-clippy", allow(double_parens, redundant_field_names))]
+#![cfg_attr(feature = "cargo-clippy", allow(redundant_field_names))]
 
 #[macro_use]
 extern crate serde_derive;