diff --git a/dd-java-agent/instrumentation/jms-1/src/main/java/datadog/trace/instrumentation/jms/util/MessagePropertyTextMap.java b/dd-java-agent/instrumentation/jms-1/src/main/java/datadog/trace/instrumentation/jms/util/MessagePropertyTextMap.java
index cd57aba2a2..5f5baded13 100644
--- a/dd-java-agent/instrumentation/jms-1/src/main/java/datadog/trace/instrumentation/jms/util/MessagePropertyTextMap.java
+++ b/dd-java-agent/instrumentation/jms-1/src/main/java/datadog/trace/instrumentation/jms/util/MessagePropertyTextMap.java
@@ -9,7 +9,7 @@ import javax.jms.JMSException;
 import javax.jms.Message;
 
 public class MessagePropertyTextMap implements TextMap {
-  static final String DASH = "_$dash$_";
+  static final String DASH = "__dash__";
 
   private final Message message;