diff --git a/library/core/src/iter/traits/iterator.rs b/library/core/src/iter/traits/iterator.rs
index 6dc748c568fcd..c5182cb3d0720 100644
--- a/library/core/src/iter/traits/iterator.rs
+++ b/library/core/src/iter/traits/iterator.rs
@@ -3674,7 +3674,7 @@ pub const trait Iterator {
         Sum::sum(self)
     }
 
-    /// Iterates over the entire iterator, multiplying all the elements
+    /// Iterates over the entire iterator, multiplying all the elements.
     ///
     /// An empty iterator returns the one value of the type.
     ///