diff --git a/Chapter10/Exercises/ex_10_2.idr b/Chapter10/Exercises/ex_10_2.idr
index dd224f1..6e72613 100644
--- a/Chapter10/Exercises/ex_10_2.idr
+++ b/Chapter10/Exercises/ex_10_2.idr
@@ -43,5 +43,5 @@ palindrome input with (vList input)
   palindrome [] | VNil = True
   palindrome [x] | VOne = True
   palindrome (x :: (xs ++ [y])) | (VCons rec) 
-      = x == y && palindrome xs
+      = x == y && palindrome xs | rec