diff --git a/sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala b/sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
index e58b7178e95b207fe29e41caef62e95245672607..70e18cebdd7fb96154fd1f6d627852fd77746c43 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
@@ -52,6 +52,7 @@ object SQLConf {
   }
 
   val OPTIMIZER_MAX_ITERATIONS = SQLConfigBuilder("spark.sql.optimizer.maxIterations")
+    .internal()
     .doc("The max number of iterations the optimizer and analyzer runs")
     .intConf
     .createWithDefault(100)