diff --git a/app/docker/models/config.js b/app/docker/models/config.js
index 56301040c..e9b2db69f 100644
--- a/app/docker/models/config.js
+++ b/app/docker/models/config.js
@@ -1,5 +1,11 @@
 import { ResourceControlViewModel } from 'Portainer/models/resourceControl/resourceControl';
 
+function b64DecodeUnicode(str) {
+  return decodeURIComponent(atob(str).split('').map(function(c) {
+      return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
+  }).join(''));
+}
+
 export function ConfigViewModel(data) {
   this.Id = data.ID;
   this.CreatedAt = data.CreatedAt;
@@ -7,7 +13,7 @@ export function ConfigViewModel(data) {
   this.Version = data.Version.Index;
   this.Name = data.Spec.Name;
   this.Labels = data.Spec.Labels;
-  this.Data = atob(data.Spec.Data);
+  this.Data = b64DecodeUnicode(data.Spec.Data);
 
   if (data.Portainer && data.Portainer.ResourceControl) {
     this.ResourceControl = new ResourceControlViewModel(data.Portainer.ResourceControl);