diff --git a/ghost/portal/scripts/dev-mode.js b/ghost/portal/scripts/dev-mode.js
index 5b100ad881..48b9c1f137 100644
--- a/ghost/portal/scripts/dev-mode.js
+++ b/ghost/portal/scripts/dev-mode.js
@@ -200,6 +200,9 @@ function startDevServer() {
                     headers: [{
                         key: 'Cache-Control',
                         value: 'no-cache'
+                    },{
+                        key: 'Access-Control-Allow-Origin',
+                        value: '*'
                     }]
                 }
             ]