diff --git a/src/models/inventoryModels/inventoryModel.ts b/src/models/inventoryModels/inventoryModel.ts
index 997992a5..deaf51cc 100644
--- a/src/models/inventoryModels/inventoryModel.ts
+++ b/src/models/inventoryModels/inventoryModel.ts
@@ -933,7 +933,7 @@ const inventorySchema = new Schema<IInventoryDatabase, InventoryDocumentProps>(
         EvolutionProgress: { type: [evolutionProgressSchema], default: undefined },
 
         //https://warframe.fandom.com/wiki/Loc-Pin
-        CustomMarkers: [CustomMarkersSchema],
+        CustomMarkers: { type: [CustomMarkersSchema], default: undefined },
 
         //Unknown and system
         DuviriInfo: DuviriInfoSchema,
diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index b0118988..bb1f8858 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -794,9 +794,11 @@ export const missionInventoryUpdate = async (data: IMissionInventoryUpdateReques
                 : undefined;
             if (map) {
                 map.markerInfos = markers.markerInfos;
+                inventory.markModified("CustomMarkers");
             } else {
                 inventory.CustomMarkers ??= [];
                 inventory.CustomMarkers.push(markers);
+                inventory.markModified("CustomMarkers");
             }
         });
     }