diff --git a/addons/gamification/views/challenge.xml b/addons/gamification/views/challenge.xml
index b37ef0eb0d8..f177a55ac5d 100644
--- a/addons/gamification/views/challenge.xml
+++ b/addons/gamification/views/challenge.xml
@@ -81,12 +81,12 @@
                             </page>
                             <page string="Reward">
                                 <group>
-                                    <field name="reward_id"/>
+                                    <field name="reward_id" attrs="{'required': [('reward_realtime','=', True)]}" />
                                     <field name="reward_first_id" />
                                     <field name="reward_second_id" attrs="{'invisible': [('reward_first_id','=', False)]}" />
                                     <field name="reward_third_id" attrs="{'invisible': ['|',('reward_first_id','=', False),('reward_second_id','=', False)]}" />
                                     <field name="reward_failure" attrs="{'invisible': [('reward_first_id','=', False)]}" />
-                                    <field name="reward_realtime" attrs="{'readonly': [('reward_id','=', False)], 'required': [('reward_id','!=', False)]}" />
+                                    <field name="reward_realtime" />
                                 </group>
                                 <div class="oe_grey">
                                     <p>Badges are granted when a challenge is finished. This is either at the end of a running period (eg: end of the month for a monthly challenge), at the end date of a challenge (if no periodicity is set) or when the challenge is manually closed.</p>