diff --git a/core/src/io/anuke/mindustry/core/World.java b/core/src/io/anuke/mindustry/core/World.java
index e337a94d1f..50469edacf 100644
--- a/core/src/io/anuke/mindustry/core/World.java
+++ b/core/src/io/anuke/mindustry/core/World.java
@@ -243,7 +243,7 @@ public class World extends Module{
         EntityQuery.resizeTree(0, 0, width * tilesize, height * tilesize);
 
         try{
-            generator.loadTileData(tiles, MapIO.readTileData(map, true), map.meta.hasOreGen(), 0);
+            generator.loadTileData(tiles, MapIO.readTileData(map, true), map.meta.hasOreGen(), Mathf.random(99999));
         } catch(Exception e){
             Log.err(e);
             if(!headless){
@@ -257,6 +257,8 @@ public class World extends Module{
 
         endMapLoad();
 
+        invalidMap = false;
+
         if(!headless){
             if(state.teams.get(players[0].getTeam()).cores.size == 0){
                 ui.showError("$text.map.nospawn");