diff --git a/Customizations/JSON/LayoutConfig.ts b/Customizations/JSON/LayoutConfig.ts
index 6678ad609..fa969ee7e 100644
--- a/Customizations/JSON/LayoutConfig.ts
+++ b/Customizations/JSON/LayoutConfig.ts
@@ -150,6 +150,10 @@ export default class LayoutConfig {
         }
 
         this.hideFromOverview = json.hideFromOverview ?? false;
+        // @ts-ignore
+        if(json.hideInOverview){
+            throw "The json for "+this.id+" contains a 'hideInOverview'. Did you mean hideFromOverview instead?"
+        }
         this.lockLocation = json.lockLocation ?? false;
         this.enableUserBadge = json.enableUserBadge ?? true;
         this.enableShareScreen = json.enableShareScreen ?? true;
diff --git a/assets/themes/play_forests/play_forests.json b/assets/themes/play_forests/play_forests.json
index 1ceba5b7a..bd824ee67 100644
--- a/assets/themes/play_forests/play_forests.json
+++ b/assets/themes/play_forests/play_forests.json
@@ -18,7 +18,7 @@
   "startLat": 0,
   "startLon": 0,
   "startZoom": 1,
-  "hideInOverview": true,
+  "hideFromOverview": true,
   "widenFactor": 0.05,
   "socialImage": "",
   "layers": [
diff --git a/assets/themes/speelplekken/speelplekken.json b/assets/themes/speelplekken/speelplekken.json
index c4242142a..ae6653f7c 100644
--- a/assets/themes/speelplekken/speelplekken.json
+++ b/assets/themes/speelplekken/speelplekken.json
@@ -14,7 +14,7 @@
   ],
   "maintainer": "MapComplete",
   "icon": "./assets/layers/play_forest/icon.svg",
-  "hideInOverview": true,
+  "hideFromOverview": true,
   "lockLocation": true,
   "version": "0",
   "startLat": 51.17174,