diff --git a/source/mqtt.c b/source/mqtt.c
index 9caeaa9b..f20c8188 100644
--- a/source/mqtt.c
+++ b/source/mqtt.c
@@ -217,10 +217,10 @@ bool aws_mqtt_is_valid_topic_filter(const struct aws_byte_cursor *topic_filter)
                 "Error while processing mqtt5 operational state"),
             AWS_DEFINE_ERROR_INFO_MQTT(
                 AWS_ERROR_MQTT5_INVALID_INBOUND_TOPIC_ALIAS,
-                "Incoming publish contained an invalid (too large or unknown) topic alias"),
+                "Incoming publish contained an invalid topic alias"),
             AWS_DEFINE_ERROR_INFO_MQTT(
                 AWS_ERROR_MQTT5_INVALID_OUTBOUND_TOPIC_ALIAS,
-                "Outgoing publish contained an invalid (too large or unknown) topic alias"),
+                "Outgoing publish contained an invalid topic alias"),
             AWS_DEFINE_ERROR_INFO_MQTT(
                 AWS_ERROR_MQTT5_INVALID_UTF8_STRING,
                 "Outbound packet contains invalid utf-8 data in a field that must be utf-8"),