diff --git a/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt b/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
index 2b391b5..49a9dd0 100644
--- a/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
+++ b/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
@@ -4343,7 +4343,7 @@
         // Start compression thread pool (parallel compression)
         val compressionThreads = maxThreads.coerceAtLeast(2)
         compressionExecutor = java.util.concurrent.Executors.newFixedThreadPool(compressionThreads) { r ->
-            Thread(r, "KrillCompressor-${Thread.currentThread().id}")
+            Thread(r, "KrillCompressor-${Thread.currentThread().threadId()}")
         }
         LOGGER.info("Started compression thread pool with $compressionThreads threads")