diff --git a/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/guice/DartWorkerModule.java b/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/guice/DartWorkerModule.java
index 15bc0e65299..e9bd59f53d8 100644
--- a/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/guice/DartWorkerModule.java
+++ b/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/dart/guice/DartWorkerModule.java
@@ -113,7 +113,7 @@ public class DartWorkerModule implements DruidModule
         final AuthorizerMapper authorizerMapper
     )
     {
-      final ExecutorService exec = Execs.multiThreaded(memoryIntrospector.numTasksInJvm(), "dart–worker-%s");
+      final ExecutorService exec = Execs.multiThreaded(memoryIntrospector.numTasksInJvm(), "dart-worker-%s");
       final File baseTempDir =
           new File(processingConfig.getTmpDir(), StringUtils.format("dart_%s", selfNode.getPortToUse()));
       return new DartWorkerRunner(