diff --git a/sdk/core/Azure.Core.Amqp/src/AmqpMessageBody.cs b/sdk/core/Azure.Core.Amqp/src/AmqpMessageBody.cs
index ce1be863aa8f2..aaec48194df22 100644
--- a/sdk/core/Azure.Core.Amqp/src/AmqpMessageBody.cs
+++ b/sdk/core/Azure.Core.Amqp/src/AmqpMessageBody.cs
@@ -27,7 +27,7 @@ public class AmqpMessageBody
         /// <summary>
         /// The sequence sections for the AMQP message body.
         /// </summary>
-        private IEnumerable<IList<object>>? _sequence;
+        private readonly IEnumerable<IList<object>>? _sequence;
 
         /// <summary>
         /// Gets the type of the message body.