diff --git a/docs/tutorial.md b/docs/tutorial.md
index f9058b4c2..b09f9340c 100644
--- a/docs/tutorial.md
+++ b/docs/tutorial.md
@@ -179,7 +179,7 @@ local record File
    close: function(File): boolean, string
 end
 
--- a record can doubles as a record and an array, by declaring an array interface
+-- a record can double as a record and an array, by declaring an array interface
 local record TreeNode<T> is {TreeNode<T>}
    item: T
 end