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-rw-r--r--src/libstd/sync/mutex.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/sync/mutex.rs b/src/libstd/sync/mutex.rs
index 59829db23cb..340dca7ce73 100644
--- a/src/libstd/sync/mutex.rs
+++ b/src/libstd/sync/mutex.rs
@@ -335,7 +335,7 @@ impl<T: ?Sized> Mutex<T> {
     /// Returns a mutable reference to the underlying data.
     ///
     /// Since this call borrows the `Mutex` mutably, no actual locking needs to
-    /// take place---the mutable borrow statically guarantees no locks exist.
+    /// take place -- the mutable borrow statically guarantees no locks exist.
     ///
     /// # Errors
     ///