diff --git a/addons/project/security/project_security.xml b/addons/project/security/project_security.xml
index 6071e644f34..8afe7de090c 100644
--- a/addons/project/security/project_security.xml
+++ b/addons/project/security/project_security.xml
@@ -36,7 +36,7 @@
         <field name="name" >Tasks According to User and Project</field>
         <field name="model_id" ref="model_project_task"/>
         <field name="global" eval="True"/>
-        <field name="domain_force">['|','|','|',('user_id','=',False),('user_id','=',user.id),('project_id.members','=',user.id),('project_id.user_id','=',user.id)]</field>
+        <field name="domain_force">['|','|','|',('user_id','=',False),('user_id','=',user.id),('project_id.members','in', [user.id]),('project_id.user_id','=',user.id)]</field>
     </record>
 
 </data>