diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
index cd7032d55599..e0e8f926019f 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
@@ -146,7 +146,8 @@ object NestedColumnAliasing {
     val nestedFieldToAlias = attributeToExtractValuesAndAliases.values.flatten.toMap
 
     // A reference attribute can have multiple aliases for nested fields.
-    val attrToAliases = AttributeMap(attributeToExtractValuesAndAliases.mapValues(_.map(_._2)))
+    val attrToAliases =
+      AttributeMap(attributeToExtractValuesAndAliases.mapValues(_.map(_._2)).toSeq)
 
     plan match {
       case Project(projectList, child) =>