diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index 5c9cfe27101..a3d93d7074b 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -155,6 +155,7 @@ pub struct AtomicBool {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Default for AtomicBool {
     /// Creates an `AtomicBool` initialized to `false`.
+    #[inline]
     fn default() -> Self {
         Self::new(false)
     }
@@ -1212,6 +1213,7 @@ pub struct $atomic_type {
 
         #[$stable]
         impl Default for $atomic_type {
+            #[inline]
             fn default() -> Self {
                 Self::new(Default::default())
             }