diff --git a/core/src/mindustry/content/UnitTypes.java b/core/src/mindustry/content/UnitTypes.java
index 19606cf7f7..6275448402 100644
--- a/core/src/mindustry/content/UnitTypes.java
+++ b/core/src/mindustry/content/UnitTypes.java
@@ -421,6 +421,7 @@ public class UnitTypes implements ContentList{
             armor = 7f;
             canBoost = true;
             landShake = 4f;
+            immunities = ObjectSet.with(StatusEffects.burning);
 
             commandLimit = 8;
 
diff --git a/core/src/mindustry/entities/bullet/BulletType.java b/core/src/mindustry/entities/bullet/BulletType.java
index 4d635ab2db..f6bfb18c78 100644
--- a/core/src/mindustry/entities/bullet/BulletType.java
+++ b/core/src/mindustry/entities/bullet/BulletType.java
@@ -161,16 +161,16 @@ public abstract class BulletType extends Content{
         return healPercent <= 0.001f || tile.team != bullet.team || tile.healthf() < 1f;
     }
 
-    public void hitTile(Bullet b, Building tile, float initialHealth){
-        if(makeFire && tile.team != b.team){
-            Fires.create(tile.tile);
+    public void hitTile(Bullet b, Building build, float initialHealth){
+        if(makeFire && build.team != b.team){
+            Fires.create(build.tile);
         }
 
-        if(healPercent > 0f && tile.team == b.team && !(tile.block instanceof ConstructBlock)){
-            Fx.healBlockFull.at(tile.x, tile.y, tile.block.size, Pal.heal);
-            tile.heal(healPercent / 100f * tile.maxHealth());
-        }else if(tile.team != b.team){
-            hit(b);
+        if(healPercent > 0f && build.team == b.team && !(build.block instanceof ConstructBlock)){
+            Fx.healBlockFull.at(build.x, build.y, build.block.size, Pal.heal);
+            build.heal(healPercent / 100f * build.maxHealth());
+        }else if(build.team != b.team){
+            hit(b, build.x, build.y);
         }
     }
 
diff --git a/core/src/mindustry/entities/bullet/RailBulletType.java b/core/src/mindustry/entities/bullet/RailBulletType.java
index 8265f35e8b..4b13e3bd41 100644
--- a/core/src/mindustry/entities/bullet/RailBulletType.java
+++ b/core/src/mindustry/entities/bullet/RailBulletType.java
@@ -54,7 +54,7 @@ public class RailBulletType extends BulletType{
     }
 
     @Override
-    public void hitTile(Bullet b, Building tile, float initialHealth){
-        handle(b, tile, initialHealth);
+    public void hitTile(Bullet b, Building build, float initialHealth){
+        handle(b, build, initialHealth);
     }
 }