diff --git a/src/MailgunSwiftTransport.php b/src/MailgunSwiftTransport.php
index 32b5bd7..299e193 100644
--- a/src/MailgunSwiftTransport.php
+++ b/src/MailgunSwiftTransport.php
@@ -498,7 +498,7 @@ public function buildMessage(Swift_Mime_SimpleMessage $message)
         }
 
         // Should we inline css
-        if (!$inlineCss && MailgunHelper::config()->inline_styles) {
+        if (!$inlineCss && MailgunHelper::config()->inline_styles && $bodyHtml) {
             $bodyHtml = EmailUtils::inline_styles($bodyHtml);
         }