diff --git a/middleware/app_be/urls.py b/middleware/app_be/urls.py
index e6ec0af..f4d73de 100644
--- a/middleware/app_be/urls.py
+++ b/middleware/app_be/urls.py
@@ -23,12 +23,12 @@ from app_be.views.rest_api import TestApiClass, ImageEndpoint, HealthEndpoint
 urlpatterns = [
     path('admin/', admin.site.urls),
     url(r'^image/get/all$', ImageEndpoint.image_api_get_all),
-    url(r'^image/get/(?P<identifier>[\w.-]+)$', ImageEndpoint.image_api_get_single),
-    url(r'^image/get/(?P<identifier>[\w.-]+)/version/(?P<version>[\w-]+)$', ImageEndpoint.image_api_get_single_version),
+    url(r'^image/get/(?P<identifier>[\w-]+)$', ImageEndpoint.image_api_get_single),
+    url(r'^image/get/(?P<identifier>[\w-]+)/version/(?P<version>[\w-]+)$', ImageEndpoint.image_api_get_single_version),
     url(r'^image/delete/all$', ImageEndpoint.image_api_delete_all),
-    url(r'^image/delete/(?P<identifier>[\w.-]+)$', ImageEndpoint.image_api_delete),
+    url(r'^image/delete/(?P<identifier>[\w-]+)$', ImageEndpoint.image_api_delete),
     url(r'^image/post$', ImageEndpoint.image_api_post),
-    url(r'^image/update/(?P<identifier>[\w.-]+)$', ImageEndpoint.image_api_update),
+    url(r'^image/update/(?P<identifier>[\w-]+)$', ImageEndpoint.image_api_update),
     url(r'^check', HealthEndpoint.check_systems)
 ]