diff --git a/tests/run-pass/reentrant-println.rs b/tests/run-pass/reentrant-println.rs
index 3703d21e0421..09c4fc3f74d3 100644
--- a/tests/run-pass/reentrant-println.rs
+++ b/tests/run-pass/reentrant-println.rs
@@ -3,7 +3,7 @@ use std::fmt::{Display, Error, Formatter};
 // This test case exercises std::sys_common::remutex::ReentrantMutex
 // by calling println!() from inside fmt
 
-struct InterruptingCow();
+struct InterruptingCow;
 
 impl Display for InterruptingCow {
     fn fmt(&self, _f: &mut Formatter<'_>) -> Result<(), Error> {
@@ -13,5 +13,5 @@ impl Display for InterruptingCow {
 }
 
 fn main() {
-    println!("\"Knock knock\" \"Who's {} there?\"", InterruptingCow());
+    println!("\"Knock knock\" \"Who's {} there?\"", InterruptingCow);
 }
diff --git a/tests/run-pass/sync.rs b/tests/run-pass/sync.rs
index d6ce939c6c36..46cad3c16201 100644
--- a/tests/run-pass/sync.rs
+++ b/tests/run-pass/sync.rs
@@ -1,5 +1,3 @@
-// Requires full MIR on Windows.
-
 #![feature(rustc_private)]
 
 use std::sync::{Mutex, RwLock, TryLockError};