diff --git a/src/Diff.elm b/src/Diff.elm
index 56d84c3..32a06e6 100644
--- a/src/Diff.elm
+++ b/src/Diff.elm
@@ -84,7 +84,7 @@ diff a b =
             []
 
 
-{-| Test the algolithm itself.
+{-| Test the algorithm itself.
 If it returns Err, it should be a bug.
 -}
 testDiff : List a -> List a -> Result BugReport (List (Change a))