diff --git a/addons/mass_mailing/views/assets.xml b/addons/mass_mailing/views/assets.xml
index 3897ef499f4..29349be5326 100644
--- a/addons/mass_mailing/views/assets.xml
+++ b/addons/mass_mailing/views/assets.xml
@@ -22,7 +22,7 @@
             * {
                 box-sizing: border-box !important;
             }
-            * h1, h2, h3, h4, h5, h6, p, td, th, div {
+            .o_layout :not(.fa) {
                 font-family: Arial, sans-serif !important;
             }
             /* Remove space around the email design. */