diff --git a/src/core/controllers/InstallerController.php b/src/core/controllers/InstallerController.php
index 085e450a55ff6daecd0b40b7dcb84c89538cf71f..6855973b8a08d2fdde49590b27d5a9fe406aace8 100644
--- a/src/core/controllers/InstallerController.php
+++ b/src/core/controllers/InstallerController.php
@@ -105,7 +105,7 @@ class InstallerController
             return $response->withStatus(400)->withJson(['errors' => 'QueryParams name is empty or not a string']);
         } elseif (!Validator::length(1, 50)->validate($queryParams['name'])) {
             return $response->withStatus(400)->withJson(['errors' => 'QueryParams name length is not valid']);
-        } elseif (strpbrk($queryParams['name'], '"; ') !== false) {
+        } elseif (strpbrk($queryParams['name'], '"; \\') !== false) {
             return $response->withStatus(400)->withJson(['errors' => 'QueryParams name is not valid']);
         }
 
@@ -288,7 +288,7 @@ class InstallerController
             return $response->withStatus(400)->withJson(['errors' => 'Body name is empty or not a string']);
         } elseif (!Validator::length(1, 50)->validate($body['name'])) {
             return $response->withStatus(400)->withJson(['errors' => 'Body name length is not valid']);
-        } elseif (strpbrk($body['name'], '"; ') !== false) {
+        } elseif (strpbrk($body['name'], '"; \\') !== false) {
             return $response->withStatus(400)->withJson(['errors' => 'Body name is not valid']);
         } elseif (!Validator::stringType()->notEmpty()->validate($body['customId'])) {
             return $response->withStatus(400)->withJson(['errors' => 'Body customId is empty or not a string']);
@@ -579,12 +579,14 @@ class InstallerController
 
         $explodedUrl = explode('/', rtrim($url, '/'));
         $lastPart = $explodedUrl[count($explodedUrl) - 1];
-        $jsonFile = file_get_contents('custom/custom.json');
-        if (!empty($jsonFile)) {
-            $jsonFile = json_decode($jsonFile, true);
-            foreach ($jsonFile as $value) {
-                if (!empty($value['path']) && $value['path'] == $lastPart) {
-                    $url = str_replace("/{$lastPart}", '', $url);
+        if (is_file('custom/custom.json')) {
+            $jsonFile = file_get_contents('custom/custom.json');
+            if (!empty($jsonFile)) {
+                $jsonFile = json_decode($jsonFile, true);
+                foreach ($jsonFile as $value) {
+                    if (!empty($value['path']) && $value['path'] == $lastPart) {
+                        $url = str_replace("/{$lastPart}", '', $url);
+                    }
                 }
             }
         }
diff --git a/test/unitTests/app/entity/EntityControllerTest.php b/test/unitTests/app/entity/EntityControllerTest.php
index ada11b65d36971c9b4cd3fada1ef95623a89d042..e5558ff7ab7fdbb3ad7ec849217e40ef6e5173cd 100755
--- a/test/unitTests/app/entity/EntityControllerTest.php
+++ b/test/unitTests/app/entity/EntityControllerTest.php
@@ -505,6 +505,8 @@ class EntityControllerTest extends TestCase
         $response     = $entityController->create($fullRequest, new \Slim\Http\Response());
         $this->assertSame(200, $response->getStatusCode());
 
+        \User\models\UserEntityModel::deleteUserEntity(['id' => $GLOBALS['id'], 'entityId' => 'R2-D2']);
+
         $environment    = \Slim\Http\Environment::mock(['REQUEST_METHOD' => 'PUT']);
         $request        = \Slim\Http\Request::createFromEnvironment($environment);
         $response       = $entityController->reassignEntity($request, new \Slim\Http\Response(), ['id' => 'R2-D2', 'newEntityId' => 'TEST-ENTITY123']);