diff --git a/src/Umbraco.Web.UI.Client/src/common/directives/grid/grid.rte.directive.js b/src/Umbraco.Web.UI.Client/src/common/directives/grid/grid.rte.directive.js
index 257901fade..d125258157 100644
--- a/src/Umbraco.Web.UI.Client/src/common/directives/grid/grid.rte.directive.js
+++ b/src/Umbraco.Web.UI.Client/src/common/directives/grid/grid.rte.directive.js
@@ -56,7 +56,7 @@ angular.module("umbraco.directives")
                         if(scope.configuration && scope.configuration.stylesheets){
                             angular.forEach(scope.configuration.stylesheets, function(stylesheet, key){
 
-                                    stylesheets.push("/css/" + stylesheet + ".css");
+                                    stylesheets.push(Umbraco.Sys.ServerVariables.umbracoSettings.cssPath + "/" + stylesheet + ".css");
                                     await.push(stylesheetResource.getRulesByName(stylesheet).then(function (rules) {
                                         angular.forEach(rules, function (rule) {
                                           var r = {};
diff --git a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/rte/rte.controller.js b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/rte/rte.controller.js
index 45812ceef2..80545ff336 100644
--- a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/rte/rte.controller.js
+++ b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/rte/rte.controller.js
@@ -64,8 +64,7 @@ angular.module("umbraco")
 
             //queue rules loading
             angular.forEach(editorConfig.stylesheets, function (val, key) {
-                stylesheets.push("../css/" + val + ".css?" + new Date().getTime());
-
+                stylesheets.push(Umbraco.Sys.ServerVariables.umbracoSettings.cssPath + "/" + val + ".css?" + new Date().getTime());
                 await.push(stylesheetResource.getRulesByName(val).then(function (rules) {
                     angular.forEach(rules, function (rule) {
                         var r = {};
diff --git a/src/Umbraco.Web/Editors/BackOfficeController.cs b/src/Umbraco.Web/Editors/BackOfficeController.cs
index 203d027539..fb7a6a5af9 100644
--- a/src/Umbraco.Web/Editors/BackOfficeController.cs
+++ b/src/Umbraco.Web/Editors/BackOfficeController.cs
@@ -341,6 +341,7 @@ namespace Umbraco.Web.Editors
                                 string.Join(",", UmbracoConfig.For.UmbracoSettings().Content.ImageFileTypes)
                             },
                             {"keepUserLoggedIn", UmbracoConfig.For.UmbracoSettings().Security.KeepUserLoggedIn},
+                            {"cssPath", IOHelper.ResolveUrl(SystemDirectories.Css).TrimEnd('/')},
                         }
                     },
                     {