diff --git a/addons/crm/crm_lead.py b/addons/crm/crm_lead.py
index a07974f4fd0..ceb9af6b215 100644
--- a/addons/crm/crm_lead.py
+++ b/addons/crm/crm_lead.py
@@ -345,7 +345,7 @@ class crm_lead(crm_case, osv.osv):
         """
         mailgate_pool = self.pool.get('email.server.tools')
 
-        subject = msg.get('subject')
+        subject = msg.get('subject') or _("No Subject")
         body = msg.get('body')
         msg_from = msg.get('from')
         priority = msg.get('priority')
diff --git a/addons/crm_claim/crm_claim.py b/addons/crm_claim/crm_claim.py
index 05634d564b8..c5755085216 100644
--- a/addons/crm_claim/crm_claim.py
+++ b/addons/crm_claim/crm_claim.py
@@ -181,7 +181,7 @@ class crm_claim(crm.crm_case, osv.osv):
         """
         mailgate_pool = self.pool.get('email.server.tools')
 
-        subject = msg.get('subject')
+        subject = msg.get('subject') or _("No Subject")
         body = msg.get('body')
         msg_from = msg.get('from')
         priority = msg.get('priority')
diff --git a/addons/crm_helpdesk/crm_helpdesk.py b/addons/crm_helpdesk/crm_helpdesk.py
index 30a2af63512..5d02ec12369 100644
--- a/addons/crm_helpdesk/crm_helpdesk.py
+++ b/addons/crm_helpdesk/crm_helpdesk.py
@@ -24,6 +24,7 @@ from osv import fields, osv
 import time
 import binascii
 import tools
+from tools.translate import _
 
 CRM_HELPDESK_STATES = (
     crm.AVAILABLE_STATES[2][0], # Cancelled
@@ -104,7 +105,7 @@ class crm_helpdesk(crm.crm_case, osv.osv):
         """
         mailgate_pool = self.pool.get('email.server.tools')
 
-        subject = msg.get('subject')
+        subject = msg.get('subject') or _("No Subject")
         body = msg.get('body')
         msg_from = msg.get('from')
         priority = msg.get('priority')
diff --git a/addons/hr_recruitment/hr_recruitment.py b/addons/hr_recruitment/hr_recruitment.py
index bc7489a0c4f..d716764e7a2 100644
--- a/addons/hr_recruitment/hr_recruitment.py
+++ b/addons/hr_recruitment/hr_recruitment.py
@@ -308,7 +308,7 @@ class hr_applicant(crm.crm_case, osv.osv):
         mailgate_pool = self.pool.get('email.server.tools')
         attach_obj = self.pool.get('ir.attachment')
 
-        subject = msg.get('subject')
+        subject = msg.get('subject') or _("No Subject")
         body = msg.get('body')
         msg_from = msg.get('from')
         priority = msg.get('priority')