diff --git a/episodes/23-continuous-integration-automated-testing.md b/episodes/23-continuous-integration-automated-testing.md
index 16e33c8d..19a84d04 100644
--- a/episodes/23-continuous-integration-automated-testing.md
+++ b/episodes/23-continuous-integration-automated-testing.md
@@ -131,7 +131,7 @@ first_scaled_by:
   date_of_birth: 1858-03-22
   nationality: German
 - name: Ludwig Purtscheller
-  date_of_birth: 1858-03-22
+  date_of_birth: 1849-10-06
   nationality: Austrian
 ```