diff --git a/core/src/io/anuke/mindustry/maps/Sectors.java b/core/src/io/anuke/mindustry/maps/Sectors.java
index 99b50170a3..5af3602acb 100644
--- a/core/src/io/anuke/mindustry/maps/Sectors.java
+++ b/core/src/io/anuke/mindustry/maps/Sectors.java
@@ -102,7 +102,7 @@ public class Sectors{
         if(checkExpansion) {
             for (int x = sector.x; x < sector.x + sector.width; x++) {
                 for (int y = sector.y; y < sector.y + sector.height; y++) {
-                    if (grid.get(x, y) != null && (grid.get(x, y).hasSave() /*|| !canMerge(sector, grid.get(x, y))*/)) {
+                    if (grid.get(x, y) != null && grid.get(x,y) != sector && grid.get(x, y).hasSave() /*|| !canMerge(sector, grid.get(x, y))*/) {
                         //if a completed sector is hit, expansion failed
                         //put back the values of the sector
                         if (expandX < 0) sector.x -= expandX;
diff --git a/core/src/io/anuke/mindustry/maps/TutorialSector.java b/core/src/io/anuke/mindustry/maps/TutorialSector.java
index 5e54f0546e..ee0a81ed3d 100644
--- a/core/src/io/anuke/mindustry/maps/TutorialSector.java
+++ b/core/src/io/anuke/mindustry/maps/TutorialSector.java
@@ -41,7 +41,7 @@ public class TutorialSector{
 
             new WaveMission(2).setMessage("$tutorial.waves"),
 
-            new ActionMission(() -> {
+            new ActionMission(() ->
                 Timers.runTask(30f, () -> {
                     Runnable r = () -> {
                         Array<Item> ores = Array.with(Items.copper, Items.coal, Items.lead);
@@ -63,8 +63,7 @@ public class TutorialSector{
                     }else{
                         threads.run(r);
                     }
-                });
-            }),
+                })),
 
             new ItemMission(Items.lead, 150).setMessage("$tutorial.lead"),
             new ItemMission(Items.copper, 250).setMessage("$tutorial.morecopper"),
@@ -131,6 +130,7 @@ public class TutorialSector{
             },
             new BattleMission(){
                 public void generate(Generation gen){} //no
+                public void onBegin(){} //also no
             }.setMessage("$tutorial.battle")
         );