diff --git a/addons/thunderbird/__terp__.py b/addons/thunderbird/__terp__.py
index 3447b0377c2..8ebe6b80b10 100644
--- a/addons/thunderbird/__terp__.py
+++ b/addons/thunderbird/__terp__.py
@@ -55,7 +55,7 @@
 	"category" : "Generic Modules/Thunderbird interface",
 	"init_xml" : [],
 	"demo_xml" : [],
-	"update_xml" : [],
+	"update_xml" : ['security/ir.model.access.csv'],
 	"active": False,
 	"installable": True
 }
diff --git a/addons/thunderbird/security/ir.model.access.csv b/addons/thunderbird/security/ir.model.access.csv
new file mode 100644
index 00000000000..fdd310a0679
--- /dev/null
+++ b/addons/thunderbird/security/ir.model.access.csv
@@ -0,0 +1,3 @@
+"id","name","model_id:id","group_id:id","perm_read","perm_write","perm_create","perm_unlink"
+"access_tinythunderbird_partner","tinythunderbird.partner","model_tinythunderbird_partner",,1,1,1,1
+