diff --git a/src/main/sarl/io/sarl/demos/fireworks/Fireworks.sarl b/src/main/sarl/io/sarl/demos/fireworks/Fireworks.sarl
index 7e4a7a7..6838486 100644
--- a/src/main/sarl/io/sarl/demos/fireworks/Fireworks.sarl
+++ b/src/main/sarl/io/sarl/demos/fireworks/Fireworks.sarl
@@ -9,6 +9,7 @@ import static io.janusproject.Boot.*
 class Firework {
 	static def main(controller : FXMLViewerController) {
 		Boot::offline = true
+		Boot::verboseLevel = 7
 		Boot::startJanus(typeof(LaunchingArea), controller)
 	}
 }