diff --git a/pmwiki_recipes/exercises.php b/pmwiki_recipes/exercises.php
index 3cc39e7..68c142f 100644
--- a/pmwiki_recipes/exercises.php
+++ b/pmwiki_recipes/exercises.php
@@ -109,6 +109,7 @@ function Exercises($pagename, $auth){
 			}
 			$result .="? ";
 			$result .="\n\nClick on the answer.";
+			break;
 		case "historyvisualization":
 			$processingpath = '/mirrors/fabien/pub/libraries/processing.js';
 			$processingpath = "$ScriptUrl/pub/libraries/processing.js";