diff --git a/swift.html.markdown b/swift.html.markdown
index 1f9fe897..8c1a7755 100644
--- a/swift.html.markdown
+++ b/swift.html.markdown
@@ -904,7 +904,7 @@ func findIndex<T: Equatable>(array: [T], valueToFind: T) -> Int? {
     }
     return nil
 }
-findIndex(array: [1, 2, 3, 4], valueToFind: 3) // 2
+findIndex(array: [1, 2, 3, 4], valueToFind: 3) // Optional(2)
 
 // You can extend types with generics as well
 extension Array where Array.Element == Int {