diff --git a/README.md b/README.md
index 02b90d8..6bfa496 100644
--- a/README.md
+++ b/README.md
@@ -67,8 +67,8 @@ and the best solution is:
 2. For the second exercise (Baysian Networks):
 
 ```
-c(engine2).
-engine2:getp({m2, ok}).
+c(engine3).
+engine3:getp({m2, ok}).
 ```