diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
index 1f80d84b744a1130ec9754e1b67773d68eb43a36..c347780924caf3a9244065d7aaeca072c651181c 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
@@ -121,7 +121,7 @@ abstract class CodeGenerator[InType <: AnyRef, OutType <: AnyRef] extends Loggin
    * @param nullTerm A term that holds a boolean value representing whether the expression evaluated
    *                 to null.
    * @param primitiveTerm A term for a possible primitive value of the result of the evaluation. Not
-   *                      valid if `nullTerm` is set to `false`.
+   *                      valid if `nullTerm` is set to `true`.
    * @param objectTerm A possibly boxed version of the result of evaluating this expression.
    */
   protected case class EvaluatedExpression(