diff --git a/src/Resources/contao/dca/tl_newsletter_recipients.php b/src/Resources/contao/dca/tl_newsletter_recipients.php
index d4e109aa22..a995d2b3b9 100644
--- a/src/Resources/contao/dca/tl_newsletter_recipients.php
+++ b/src/Resources/contao/dca/tl_newsletter_recipients.php
@@ -337,7 +337,7 @@ public function listRecipient($row)
 			$label .= ' <span style="color:#b3b3b3;padding-left:3px">(' . $GLOBALS['TL_LANG']['tl_newsletter_recipients']['manually'] . ')</span>';
 		}
 
-		return sprintf('<div class="tl_content_left"><div class="list_icon" style="background-image:url(\'%ssystem/themes/%s/images/%s.gif\')">%s</div></div>', TL_ASSETS_URL, $this->getTheme(), ($row['active'] ? 'member' : 'member_'), $label) . "\n";
+		return sprintf('<div class="tl_content_left"><div class="list_icon" style="background-image:url(\'%ssystem/themes/%s/images/%s.gif\')">%s</div></div>', TL_ASSETS_URL, Backend::getTheme(), ($row['active'] ? 'member' : 'member_'), $label) . "\n";
 	}