diff --git a/ps-grammar/robotZoo/Ask4Task.jsgf b/ps-grammar/robotZoo/Ask4Task.jsgf
index 1c37f585b5b8da6d003bc550fa775d6c87035942..0910a6b0440467adc28fa5bf74d444a07c572bcc 100644
--- a/ps-grammar/robotZoo/Ask4Task.jsgf
+++ b/ps-grammar/robotZoo/Ask4Task.jsgf
@@ -5,7 +5,7 @@ public <statement> = [tobi] ( <dance> | <joke> | <show> ) [tobi];
 
 
 <dance> = dance;
-<joke> = ( [tell] [me] [a] joke | gag );
-<show> = ( [show] [me] team | show | (team member) );
+<joke> = [tell] [me] [a] (  joke | gag );
+<show> = [show] (  team | (team member) );