diff --git a/core/src/io/anuke/mindustry/core/Control.java b/core/src/io/anuke/mindustry/core/Control.java
index 935a140fa9..aac708c169 100644
--- a/core/src/io/anuke/mindustry/core/Control.java
+++ b/core/src/io/anuke/mindustry/core/Control.java
@@ -160,8 +160,8 @@ public class Control extends Module{
 
         Events.on(WorldLoadEvent.class, event -> threads.runGraphics(() -> Events.fire(new WorldLoadGraphicsEvent())));
 
-        Events.on(BlockBuildEvent.class, event -> {
-            if(event.team == players[0].getTeam() && Recipe.getByResult(event.tile.block()) != null){
+        Events.on(TileChangeEvent.class, event -> {
+            if(event.tile.getTeam() == players[0].getTeam() && Recipe.getByResult(event.tile.block()) != null){
                 unlocks.handleContentUsed(Recipe.getByResult(event.tile.block()));
             }
         });
diff --git a/core/src/io/anuke/mindustry/entities/traits/BuilderTrait.java b/core/src/io/anuke/mindustry/entities/traits/BuilderTrait.java
index c49dca1a6a..2b1ff13c11 100644
--- a/core/src/io/anuke/mindustry/entities/traits/BuilderTrait.java
+++ b/core/src/io/anuke/mindustry/entities/traits/BuilderTrait.java
@@ -247,7 +247,7 @@ public interface BuilderTrait extends Entity{
 
             if(Mathf.chance(Timers.delta() * (0.06 - item.hardness * 0.01) * getMinePower())){
 
-                if(unit.distanceTo(core) < mineTransferRange && core.items.get(item) < core.tile.block().getMaximumAccepted(core.tile, item)){
+                if(unit.distanceTo(core) < mineTransferRange && core.tile.block().acceptStack(item, 1, core.tile, unit) == 1){
                     Call.transferItemTo(item, 1,
                         tile.worldx() + Mathf.range(tilesize / 2f),
                         tile.worldy() + Mathf.range(tilesize / 2f), core.tile);
diff --git a/core/src/io/anuke/mindustry/input/DesktopInput.java b/core/src/io/anuke/mindustry/input/DesktopInput.java
index 13b7de4638..416c7fe62f 100644
--- a/core/src/io/anuke/mindustry/input/DesktopInput.java
+++ b/core/src/io/anuke/mindustry/input/DesktopInput.java
@@ -146,9 +146,9 @@ public class DesktopInput extends InputHandler{
 
         pollInput();
 
-        if(recipe != null && !Settings.getBool("desktop-place-help", false)){
+        if(recipe != null && !Settings.getBool("desktop-place-help-2", false)){
             ui.showInfo("$text.construction.desktop");
-            Settings.putBool("desktop-place-help", true);
+            Settings.putBool("desktop-place-help-2", true);
             Settings.save();
         }