diff --git a/src/main/java/org/radarbase/appserver/exception/handler/ResponseEntityExceptionHandler.java b/src/main/java/org/radarbase/appserver/exception/handler/ResponseEntityExceptionHandler.java
index 5a7ef43d..7b219315 100644
--- a/src/main/java/org/radarbase/appserver/exception/handler/ResponseEntityExceptionHandler.java
+++ b/src/main/java/org/radarbase/appserver/exception/handler/ResponseEntityExceptionHandler.java
@@ -59,6 +59,11 @@ public final ResponseEntity<ErrorDetails> handleInvalidNotificationDetailsExcept
         return handleEntityWithoutCause(ex, request);
     }
 
+    @ExceptionHandler(MessageTransmitException.class)
+    public final ResponseEntity<ErrorDetails> handleMessageTransmitException(Exception ex, WebRequest request) {
+        return handleEntityWithCause(ex, request);
+    }
+
     @ExceptionHandler(InvalidUserDetailsException.class)
     public final ResponseEntity<ErrorDetails> handleInvalidUserDetailsException(Exception ex, WebRequest request) {
         return handleEntityWithCause(ex, request);