diff --git a/lib/Service/LabelService.php b/lib/Service/LabelService.php
index 2fc5658e3..6b8e09b55 100644
--- a/lib/Service/LabelService.php
+++ b/lib/Service/LabelService.php
@@ -93,12 +93,13 @@ class LabelService {
 		$this->permissionService->checkPermission(null, $boardId, Acl::PERMISSION_MANAGE);
 
 		//$this->checkDuplicateTitle($boardId, $title);
-		$boardLabels = array();
 		$boardLabels = $this->labelMapper->findAll($boardId);
-		foreach($boardLabels as $boardLabel) {
-			if ($boardLabel->getTitle() === $title) {
-				throw new BadRequestException('title must be unique');
-				break;
+		if (is_array($boardLabels) || is_object($boardLabels)) {
+			foreach($boardLabels as $boardLabel) {
+				if ($boardLabel->getTitle() === $title) {
+					throw new BadRequestException('title must be unique');
+					break;
+				}
 			}
 		}
 
@@ -169,13 +170,15 @@ class LabelService {
 		
 		$boardLabels = array();
 		$boardLabels = $this->labelMapper->findAll($label->getBoardId());
-		foreach($boardLabels as $boardLabel) {
-			if ($boardLabel->getId() === $label->getId()) {
-				continue;
-			}
-			if ($boardLabel->getTitle() === $title) {
-				throw new BadRequestException('title must be unique');
-				break;
+		if (is_array($boardLabels) || is_object($boardLabels)) {
+			foreach($boardLabels as $boardLabel) {
+				if ($boardLabel->getId() === $label->getId()) {
+					continue;
+				}
+				if ($boardLabel->getTitle() === $title) {
+					throw new BadRequestException('title must be unique');
+					break;
+				}
 			}
 		}