diff --git a/src/model/LiveAtlasMapDefinition.ts b/src/model/LiveAtlasMapDefinition.ts
index a116b2c..bfbc948 100644
--- a/src/model/LiveAtlasMapDefinition.ts
+++ b/src/model/LiveAtlasMapDefinition.ts
@@ -73,11 +73,11 @@ export default class LiveAtlasMapDefinition {
 		this.scale = (1 / Math.pow(2, this.nativeZoomLevels));
 
 		if(options.mapToWorld || options.worldToMap) {
-			this.projection = Object.freeze(new LiveAtlasProjection({
+			this.projection = new LiveAtlasProjection({
 				mapToWorld: options.mapToWorld || [0, 0, 0, 0, 0, 0, 0, 0, 0],
 				worldToMap: options.worldToMap || [0, 0, 0, 0, 0, 0, 0, 0, 0],
 				nativeZoomLevels: this.nativeZoomLevels,
-			}));
+			});
 		}
 	}
 
diff --git a/src/providers/DynmapMapProvider.ts b/src/providers/DynmapMapProvider.ts
index b528744..917f7e7 100644
--- a/src/providers/DynmapMapProvider.ts
+++ b/src/providers/DynmapMapProvider.ts
@@ -119,7 +119,7 @@ export default class DynmapMapProvider extends MapProvider {
 					return;
 				}
 
-				w.maps.set(map.name, new LiveAtlasMapDefinition({
+				w.maps.set(map.name, Object.freeze(new LiveAtlasMapDefinition({
 					world: w, //Ignore append_to_world here otherwise things break
 					background: map.background || '#000000',
 					backgroundDay: map.backgroundday || '#000000',
@@ -135,7 +135,7 @@ export default class DynmapMapProvider extends MapProvider {
 					worldToMap: map.worldtomap || undefined,
 					nativeZoomLevels: map.mapzoomout || 1,
 					extraZoomLevels: map.mapzoomin || 0
-				}));
+				})));
 			});
 		});