diff --git a/lib/private/URLGenerator.php b/lib/private/URLGenerator.php
index d954153ab8..2387deb610 100644
--- a/lib/private/URLGenerator.php
+++ b/lib/private/URLGenerator.php
@@ -159,13 +159,17 @@ class URLGenerator implements IURLGenerator {
 		// Check if the app is in the app folder
 		$path = '';
 		$themingEnabled = $this->config->getSystemValue('installed', false) && \OCP\App::isEnabled('theming') && \OC_App::isAppLoaded('theming');
-		if($themingEnabled && $image === "favicon.ico" && \OC::$server->getThemingDefaults()->shouldReplaceIcons()) {
+		if($themingEnabled && $image === 'favicon.ico' && \OC::$server->getThemingDefaults()->shouldReplaceIcons()) {
 			$cacheBusterValue = $this->config->getAppValue('theming', 'cachebuster', '0');
-			if($app==="") { $app = "core"; }
+			if($app === '') { $app = 'core'; }
 			$path = $this->linkToRoute('theming.Icon.getFavicon', [ 'app' => $app ]) . '?v='. $cacheBusterValue;
-		} elseif($themingEnabled && $image === "favicon-touch.png" && \OC::$server->getThemingDefaults()->shouldReplaceIcons()) {
+		} elseif($themingEnabled && $image === 'favicon-touch.png' && \OC::$server->getThemingDefaults()->shouldReplaceIcons()) {
 			$cacheBusterValue = $this->config->getAppValue('theming', 'cachebuster', '0');
-			if($app==="") { $app = "core"; }
+			if($app === '') { $app = 'core'; }
+			$path = $this->linkToRoute('theming.Icon.getTouchIcon', [ 'app' => $app ]) . '?v='. $cacheBusterValue;
+		} elseif($themingEnabled && $image === 'favicon-fb.png' && \OC::$server->getThemingDefaults()->shouldReplaceIcons()) {
+			$cacheBusterValue = $this->config->getAppValue('theming', 'cachebuster', '0');
+			if($app === '') { $app = 'core'; }
 			$path = $this->linkToRoute('theming.Icon.getTouchIcon', [ 'app' => $app ]) . '?v='. $cacheBusterValue;
 		} elseif (file_exists(\OC::$SERVERROOT . "/themes/$theme/apps/$app/img/$image")) {
 			$path = \OC::$WEBROOT . "/themes/$theme/apps/$app/img/$image";