diff --git a/private/lib/RSSHelper.php b/private/lib/RSSHelper.php
index fb82062..1f748a0 100644
--- a/private/lib/RSSHelper.php
+++ b/private/lib/RSSHelper.php
@@ -56,7 +56,7 @@ class RSSHelper {
 			$renderer = $mainMedia->getRenderer();
 			if ($renderer instanceof MediaImage){
 				$link = $renderer->getImageLink(MediaRendererInterface::SIZE_MEDIUM);
-				echo '<enclosure url="'.$renderer->getImageLink(MediaRendererInterface::SIZE_MEDIUM).'" length="'.filesize($renderer->getPath()).'" type="image/png" />',PHP_EOL;
+				echo '<enclosure url="'.htmlentities($renderer->getImageLink(MediaRendererInterface::SIZE_MEDIUM)).'" length="'.filesize($renderer->getPath()).'" type="image/png" />',PHP_EOL;
 			}
 		}