diff --git a/schema/sprotty/diagramAccept.json b/schema/sprotty/diagramAccept.json
index 22a7b106..8af36a81 100644
--- a/schema/sprotty/diagramAccept.json
+++ b/schema/sprotty/diagramAccept.json
@@ -19,7 +19,7 @@
                     "enum": ["sprotty"]
                 },
                 "action": {
-                    "$ref": "./actions/action.json#action"
+                    "$ref": "/kieler/klighd-vscode/tree/main/schema/sprotty/actions/action.json"
                 }
             }
         }