diff --git a/schemas/api-config/dashboard.json b/schemas/api-config/dashboard.json
index 05ad371..bbc1249 100644
--- a/schemas/api-config/dashboard.json
+++ b/schemas/api-config/dashboard.json
@@ -231,12 +231,17 @@
                     ]
                 },
                 "subTitle": {
-                    "type": "object",
-                    "properties": {
-                        "de": { "type": "string" },
-                        "en": { "type": "string" }
-                    },
-                    "required": ["de", "en"]
+                    "oneOf": [
+                        { "type": "string" },
+                        {
+                            "type": "object",
+                            "properties": {
+                                "de": { "type": "string" },
+                                "en": { "type": "string" }
+                            },
+                            "required": ["de", "en"]
+                        }
+                    ]
                 },
                 "columns": {
                     "type": "array",