diff --git a/tutorials/tour/case-classes.md b/tutorials/tour/case-classes.md
index b7f651b25a..65e213b9e0 100644
--- a/tutorials/tour/case-classes.md
+++ b/tutorials/tour/case-classes.md
@@ -43,7 +43,7 @@ will print
     Var(x) == Var(x) => true
     Var(x) == Var(y) => false
 
-It makes only sense to define case classes if pattern matching is used to decompose data structures. The following [object](singleton-objects.html) defines a pretty printer function for our lambda calculus representation:
+It only makes sense to define case classes if pattern matching is used to decompose data structures. The following [object](singleton-objects.html) defines a pretty printer function for our lambda calculus representation:
 
     object TermTest extends scala.App {
       def printTerm(term: Term) {