diff --git a/src/qpid/broker/amqp/Translation.cpp b/src/qpid/broker/amqp/Translation.cpp
index aa1b58b4b..405a5202a 100644
--- a/src/qpid/broker/amqp/Translation.cpp
+++ b/src/qpid/broker/amqp/Translation.cpp
@@ -230,7 +230,7 @@ boost::intrusive_ptr<const qpid::broker::amqp_0_10::MessageTransfer> Translation
               case qpid::amqp::MessageId::NONE:
                 break;
               case qpid::amqp::MessageId::UUID:
-                assert(cid.value.bytes.size = 16);
+                assert(cid.value.bytes.size == 16);
                 props->setCorrelationId(qpid::framing::Uuid(cid.value.bytes.data).str());
                 break;
               case qpid::amqp::MessageId::BYTES: