diff --git a/modules/events-server/build.gradle.kts b/modules/events-server/build.gradle.kts
index 6972839..996c2ce 100644
--- a/modules/events-server/build.gradle.kts
+++ b/modules/events-server/build.gradle.kts
@@ -15,6 +15,7 @@ description = """
 
 val projectId: String by project.extra
 
+val kafkaStateDir = layout.projectDirectory.dir("kafka-state")
 
 dependencies {
 
@@ -66,7 +67,7 @@ tasks.withType<KotlinCompile> {
 val kafkaStateDirDelete by tasks.registering(Delete::class) {
   group = project.name
   mustRunAfter(kafkaConsumersDelete)
-  delete(layout.projectDirectory.dir("kafka-state"))
+  delete(kafkaStateDir)
 }
 
 val kafkaConsumersDelete by tasks.registering(KafkaConsumerGroupsTask.DeleteAll::class) {
@@ -76,3 +77,9 @@ val kafkaConsumersDelete by tasks.registering(KafkaConsumerGroupsTask.DeleteAll:
 //tasks.run.configure {
 //  dependsOn(kafkatorioEventsServerKafkaForceReset)
 //}
+
+idea {
+  module {
+    excludeDirs = excludeDirs + kafkaStateDir.asFile
+  }
+}
diff --git a/modules/events-server/src/main/kotlin/dev/adamko/kafkatorio/processor/topology/model.kt b/modules/events-server/src/main/kotlin/dev/adamko/kafkatorio/processor/topology/model.kt
index 93375ee..d32032f 100644
--- a/modules/events-server/src/main/kotlin/dev/adamko/kafkatorio/processor/topology/model.kt
+++ b/modules/events-server/src/main/kotlin/dev/adamko/kafkatorio/processor/topology/model.kt
@@ -16,21 +16,21 @@ value class FactorioServerId(val id: String) {
 enum class ChunkSize(
   val zoomLevel: Int,
 ) : Comparable<ChunkSize> {
-  CHUNK_512(-1), // 512
-  CHUNK_256(0), // 256
-  CHUNK_128(1), // 128
-  CHUNK_064(2), // 64
-  CHUNK_032(3), // 32
+  CHUNK_512(-1),
+  CHUNK_256(0),
+  CHUNK_128(1),
+  CHUNK_064(2),
+  CHUNK_032(3),
   ;
 
   val tilesPerChunk: Int = 2f.pow(8 - zoomLevel).roundToInt()
 
   init {
-    require(tilesPerChunk > 0) { "chunkSize must be positive" }
+    require(tilesPerChunk > 0) { "tilesPerChunk $tilesPerChunk must be positive" }
     // 1000 & 0111 = 0000 =>  pow^2
     // 1001 & 1000 = 1000 => !pow^2
     require(tilesPerChunk and (tilesPerChunk - 1) == 0) {
-      "tilesPerChunk must be a power-of-two number"
+      "tilesPerChunk $tilesPerChunk must be a power-of-two number"
     }
   }