diff --git a/addons/mail/static/src/js/mail.js b/addons/mail/static/src/js/mail.js
index 84b27b00da7..63f80fd4678 100644
--- a/addons/mail/static/src/js/mail.js
+++ b/addons/mail/static/src/js/mail.js
@@ -204,7 +204,7 @@ openerp.mail = function (session) {
             this.subject = datasets.subject ||  false,
             this.name = datasets.name ||  false,
             this.record_name = datasets.record_name ||  false,
-            this.body = datasets.body ||  false,
+            this.body = datasets.body || '',
             this.vote_nb = datasets.vote_nb || 0,
             this.has_voted = datasets.has_voted ||  false,
             this.is_favorite = datasets.is_favorite ||  false,