diff --git a/api/http/handler/stacks/stack_update_git_redeploy.go b/api/http/handler/stacks/stack_update_git_redeploy.go
index 250c67e61..c338757e0 100644
--- a/api/http/handler/stacks/stack_update_git_redeploy.go
+++ b/api/http/handler/stacks/stack_update_git_redeploy.go
@@ -1,7 +1,6 @@
 package stacks
 
 import (
-	"errors"
 	"fmt"
 	"log"
 	"net/http"
@@ -32,9 +31,6 @@ func (payload *stackGitRedployPayload) Validate(r *http.Request) error {
 		payload.RepositoryReferenceName = defaultGitReferenceName
 	}
 
-	if payload.RepositoryAuthentication && govalidator.IsNull(payload.RepositoryPassword) {
-		return errors.New("invalid repository credentials. Username and password must be specified when authentication is enabled")
-	}
 	return nil
 }
 
diff --git a/app/portainer/rest/stack.js b/app/portainer/rest/stack.js
index 58f10fe47..d41bdf04a 100644
--- a/app/portainer/rest/stack.js
+++ b/app/portainer/rest/stack.js
@@ -5,7 +5,7 @@ angular.module('portainer.app').factory('Stack', [
   function StackFactory($resource, EndpointProvider, API_ENDPOINT_STACKS) {
     'use strict';
     return $resource(
-      API_ENDPOINT_STACKS + '/:id/:action',
+      API_ENDPOINT_STACKS + '/:id/:action/:subaction',
       {},
       {
         get: { method: 'GET', params: { id: '@id' } },
@@ -18,7 +18,7 @@ angular.module('portainer.app').factory('Stack', [
         migrate: { method: 'POST', params: { id: '@id', action: 'migrate', endpointId: '@endpointId' }, ignoreLoadingBar: true },
         start: { method: 'POST', params: { id: '@id', action: 'start' } },
         stop: { method: 'POST', params: { id: '@id', action: 'stop' } },
-        updateGit: { method: 'PUT', params: { id: '@id', action: 'git/redeploy' } },
+        updateGit: { method: 'PUT', params: { id: '@id', action: 'git', subaction: 'redeploy' } },
         updateGitStackSettings: { method: 'POST', params: { id: '@id', action: 'git' }, ignoreLoadingBar: true },
       }
     );