Index: t3lib/class.t3lib_befunc.php
===================================================================
--- t3lib/class.t3lib_befunc.php	(revision 10022)
+++ t3lib/class.t3lib_befunc.php	(working copy)
@@ -2695,17 +2695,18 @@
 	public static function getViewDomain($pageId, $rootLine = null) {
 		$domain = rtrim(t3lib_div::getIndpEnv('TYPO3_SITE_URL'), '/');
 
-		if (!is_array($rootLine)) {
-			$rootLine = self::BEgetRootLine($pageId);
-		}
-
-			// checks alternate domains
-		if (count($rootLine) > 0) {
-			$urlParts = parse_url($domain);
-			if (self::getDomainStartPage($urlParts['host'], $urlParts['path'])) {
-				$protocol = t3lib_div::getIndpEnv('TYPO3_SSL') ? 'https://' : 'http://';
-				$domain = $protocol . self::firstDomainRecord($rootLine);
+		if (intval($pageId) > 0) {
+			if (!is_array($rootLine)) {
+				$rootLine = self::BEgetRootLine($pageId);
 			}
+				// checks alternate domains
+			if (count($rootLine) > 0) {
+				$urlParts = parse_url($domain);
+				if (self::getDomainStartPage($urlParts['host'], $urlParts['path'])) {
+					$protocol = t3lib_div::getIndpEnv('TYPO3_SSL') ? 'https://' : 'http://';
+					$domain = $protocol . self::firstDomainRecord($rootLine);
+				}
+			}
 		}
 
 		return $domain;