diff --git a/examples/widgetapp/progress/increasing_progresssource.e b/examples/widgetapp/progress/increasing_progresssource.e
index f62b2acd..20e1c0b8 100644
--- a/examples/widgetapp/progress/increasing_progresssource.e
+++ b/examples/widgetapp/progress/increasing_progresssource.e
@@ -9,7 +9,7 @@ class
 
 inherit
 
-	WSF_PROGRESSSOURCE
+	WSF_PROGRESS_SOURCE
 
 create
 	make