diff --git a/.idea/runConfigurations/App.xml b/.idea/runConfigurations/App.xml
new file mode 100644
index 000000000..8a91989a2
--- /dev/null
+++ b/.idea/runConfigurations/App.xml
@@ -0,0 +1,17 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="App" type="Application" factoryName="Application">
+    <option name="ALTERNATIVE_JRE_PATH" value="1.8.0_242" />
+    <option name="MAIN_CLASS_NAME" value="net.torvald.terrarum.App" />
+    <module name="terrarum.terrarum" />
+    <option name="VM_PARAMETERS" value="-ea" />
+    <extension name="coverage">
+      <pattern>
+        <option name="PATTERN" value="net.torvald.terrarum.*" />
+        <option name="ENABLED" value="true" />
+      </pattern>
+    </extension>
+    <method v="2">
+      <option name="Make" enabled="true" />
+    </method>
+  </configuration>
+</component>
\ No newline at end of file
diff --git a/src/net/torvald/UnsafePtr.kt b/src/net/torvald/UnsafePtr.kt
index ab4a29049..c83f0d1f2 100644
--- a/src/net/torvald/UnsafePtr.kt
+++ b/src/net/torvald/UnsafePtr.kt
@@ -110,8 +110,8 @@ internal class UnsafePtr(pointer: Long, allocSize: Long) {
         // You may break the glass and use this tool when some fucking incomprehensible bugs ("vittujen vitun bugit")
         // appear (e.g. getting garbage values when it fucking shouldn't)
 
-//        assert(!destroyed) { throw NullPointerException("The pointer is already destroyed ($this)") }
-//        if (index !in 0 until size) throw IndexOutOfBoundsException("Index: $index; alloc size: $size")
+        assert(!destroyed) { throw NullPointerException("The pointer is already destroyed ($this)") }
+        assert(index in 0 until size) { throw IndexOutOfBoundsException("Index: $index; alloc size: $size") }
     }
 
     operator fun get(index: Long): Byte {
diff --git a/src/net/torvald/terrarum/App.java b/src/net/torvald/terrarum/App.java
index fc9a71d43..998651b20 100644
--- a/src/net/torvald/terrarum/App.java
+++ b/src/net/torvald/terrarum/App.java
@@ -34,8 +34,8 @@ import net.torvald.terrarum.langpack.Lang;
 import net.torvald.terrarum.modulebasegame.IngameRenderer;
 import net.torvald.terrarum.modulebasegame.TerrarumIngame;
 import net.torvald.terrarum.modulebasegame.ui.ItemSlotImageFactory;
-import net.torvald.terrarum.serialise.WriteConfig;
 import net.torvald.terrarum.savegame.DiskSkimmer;
+import net.torvald.terrarum.serialise.WriteConfig;
 import net.torvald.terrarum.ui.Toolkit;
 import net.torvald.terrarum.utils.JsonFetcher;
 import net.torvald.terrarum.worlddrawer.CreateTileAtlas;
@@ -842,7 +842,7 @@ public class App implements ApplicationListener {
         tileMaker = new CreateTileAtlas();
         tileMaker.invoke(false);
 
-        IME.INSTANCE.invoke();
+        IME.invoke();
 
         Terrarum.initialise();
 
diff --git a/src/net/torvald/terrarum/gamecontroller/IME.kt b/src/net/torvald/terrarum/gamecontroller/IME.kt
index c4455ae44..92c497fe0 100644
--- a/src/net/torvald/terrarum/gamecontroller/IME.kt
+++ b/src/net/torvald/terrarum/gamecontroller/IME.kt
@@ -88,7 +88,7 @@ object IME {
         }
     }
 
-    fun invoke() {}
+    @JvmStatic fun invoke() {}
 
     fun getLowLayerByName(name: String): TerrarumKeyLayout {
         return lowLayers[name.lowercase()]!!