diff --git a/avro-serde/src/main/java/io/confluent/kafka/streams/serdes/avro/SpecificAvroSerde.java b/avro-serde/src/main/java/io/confluent/kafka/streams/serdes/avro/SpecificAvroSerde.java
index 9964320db35..c0438cc1be9 100644
--- a/avro-serde/src/main/java/io/confluent/kafka/streams/serdes/avro/SpecificAvroSerde.java
+++ b/avro-serde/src/main/java/io/confluent/kafka/streams/serdes/avro/SpecificAvroSerde.java
@@ -102,6 +102,9 @@ public Deserializer<T> deserializer() {
     return inner.deserializer();
   }
 
+  /**
+   * WARNING: Only call this method once as only first call is used.
+   */
   @Override
   public void configure(final Map<String, ?> serdeConfig, final boolean isSerdeForRecordKeys) {
     inner.serializer().configure(serdeConfig, isSerdeForRecordKeys);