diff --git a/ksql-execution/src/main/java/io/confluent/ksql/execution/function/udtf/KudtfFlatMapper.java b/ksql-execution/src/main/java/io/confluent/ksql/execution/function/udtf/KudtfFlatMapper.java
index 65a470af0c58..af4c9812a7f9 100644
--- a/ksql-execution/src/main/java/io/confluent/ksql/execution/function/udtf/KudtfFlatMapper.java
+++ b/ksql-execution/src/main/java/io/confluent/ksql/execution/function/udtf/KudtfFlatMapper.java
@@ -37,7 +37,7 @@ public KudtfFlatMapper(final List<TableFunctionApplier> tableFunctionAppliers) {
 
   /*
   This function zips results from multiple table functions together as described in KLIP-9
-  in the design-proposals directory
+  in the design-proposals directory.
    */
   @Override
   public Iterable<GenericRow> apply(final GenericRow row) {