diff --git a/library/core/src/option.rs b/library/core/src/option.rs
index f485763b234..5d5e9559034 100644
--- a/library/core/src/option.rs
+++ b/library/core/src/option.rs
@@ -943,7 +943,7 @@ impl<T> Option<T> {
     // Transforming contained values
     /////////////////////////////////////////////////////////////////////////
 
-    /// Maps an `Option<T>` to `Option<U>` by applying a function to a contained value (if `Some`) or return `None` (if `None`).
+    /// Maps an `Option<T>` to `Option<U>` by applying a function to a contained value (if `Some`) or returns `None` (if `None`).
     ///
     /// # Examples
     ///