diff --git a/UI/Templates/MailPartViewers/UIxMailPartTextViewer.wox b/UI/Templates/MailPartViewers/UIxMailPartTextViewer.wox
index 3a65c7eb8..b90c69b17 100644
--- a/UI/Templates/MailPartViewers/UIxMailPartTextViewer.wox
+++ b/UI/Templates/MailPartViewers/UIxMailPartTextViewer.wox
@@ -6,4 +6,4 @@
   xmlns:rsrc="OGo:url"
   xmlns:label="OGo:label"
   class="mailer_plaincontent"
-><var:string value="flatContentAsString" /></div>
+><var:string value="flatContentAsString" const:escapeHTML="NO" /></div>