diff --git a/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/ActiveMQStompException.java b/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/ActiveMQStompException.java
index ba75460d78..76fcf35c40 100644
--- a/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/ActiveMQStompException.java
+++ b/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/ActiveMQStompException.java
@@ -91,6 +91,7 @@ public class ActiveMQStompException extends Exception
 
       if (body != null)
       {
+         frame.addHeader(Stomp.Headers.CONTENT_TYPE, "text/plain");
          frame.setByteBody(body.getBytes(StandardCharsets.UTF_8));
       }
       else
diff --git a/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/StompSession.java b/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/StompSession.java
index 3541ef025d..f7aad8bc79 100644
--- a/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/StompSession.java
+++ b/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/StompSession.java
@@ -211,6 +211,7 @@ public class StompSession implements SessionCallback
       if (stompSubscription != null)
       {
          StompFrame frame = connection.getFrameHandler().createStompFrame(Stomp.Responses.ERROR);
+         frame.addHeader(Stomp.Headers.CONTENT_TYPE, "text/plain");
          frame.setBody("consumer with ID " + consumerId + " disconnected by server");
          connection.sendFrame(frame);
       }
diff --git a/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/v11/StompFrameHandlerV11.java b/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/v11/StompFrameHandlerV11.java
index d0f5ddfaba..fa6e2c231c 100644
--- a/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/v11/StompFrameHandlerV11.java
+++ b/artemis-protocols/artemis-stomp-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/stomp/v11/StompFrameHandlerV11.java
@@ -105,6 +105,7 @@ public class StompFrameHandlerV11 extends VersionedStompFrameHandler implements
             // not valid
             response = createStompFrame(Stomp.Responses.ERROR);
             response.setNeedsDisconnect(true);
+            response.addHeader(Stomp.Headers.CONTENT_TYPE, "text/plain");
             response.addHeader(Stomp.Headers.Error.MESSAGE, "Failed to connect");
             response.setBody("The login account is not valid.");
          }