diff --git a/nullaway/src/main/java/com/uber/nullaway/fixserialization/FixSerializationConfig.java b/nullaway/src/main/java/com/uber/nullaway/fixserialization/FixSerializationConfig.java
index 208665b839..aabe1bb9ac 100644
--- a/nullaway/src/main/java/com/uber/nullaway/fixserialization/FixSerializationConfig.java
+++ b/nullaway/src/main/java/com/uber/nullaway/fixserialization/FixSerializationConfig.java
@@ -55,6 +55,7 @@ public class FixSerializationConfig {
 
   private final Serializer serializer;
 
+  /** Default Constructor, all features are disabled with this config. */
   public FixSerializationConfig() {
     suggestEnabled = false;
     suggestEnclosing = false;