diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
index 3ab96c2d198cc..a1194aa8a9026 100644
--- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
+++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
@@ -1023,7 +1023,6 @@ abstract class AnsiCastSuiteBase extends CastSuiteBase {
   }
 
   test("ANSI mode: cast string to timestamp with parse error") {
-    val activeConf = conf
     DateTimeTestUtils.outstandingZoneIds.foreach { zid =>
       def checkCastWithParseError(str: String): Unit = {
         checkExceptionInExpression[DateTimeException](
@@ -1031,23 +1030,20 @@ abstract class AnsiCastSuiteBase extends CastSuiteBase {
           s"Cannot cast $str to TimestampType.")
       }
 
-      SQLConf.withExistingConf(activeConf) {
-        checkCastWithParseError("123")
-        checkCastWithParseError("2015-03-18 123142")
-        checkCastWithParseError("2015-03-18T123123")
-        checkCastWithParseError("2015-03-18X")
-        checkCastWithParseError("2015/03/18")
-        checkCastWithParseError("2015.03.18")
-        checkCastWithParseError("20150318")
-        checkCastWithParseError("2015-031-8")
-        checkCastWithParseError("2015-03-18T12:03:17-0:70")
-        checkCastWithParseError("abdef")
-      }
+      checkCastWithParseError("123")
+      checkCastWithParseError("2015-03-18 123142")
+      checkCastWithParseError("2015-03-18T123123")
+      checkCastWithParseError("2015-03-18X")
+      checkCastWithParseError("2015/03/18")
+      checkCastWithParseError("2015.03.18")
+      checkCastWithParseError("20150318")
+      checkCastWithParseError("2015-031-8")
+      checkCastWithParseError("2015-03-18T12:03:17-0:70")
+      checkCastWithParseError("abdef")
     }
   }
 
   test("ANSI mode: cast string to date with parse error") {
-    val activeConf = conf
     DateTimeTestUtils.outstandingZoneIds.foreach { zid =>
       def checkCastWithParseError(str: String): Unit = {
         checkExceptionInExpression[DateTimeException](
@@ -1055,18 +1051,16 @@ abstract class AnsiCastSuiteBase extends CastSuiteBase {
           s"Cannot cast $str to DateType.")
       }
 
-      SQLConf.withExistingConf(activeConf) {
-        checkCastWithParseError("12345")
-        checkCastWithParseError("12345-12-18")
-        checkCastWithParseError("2015-13-18")
-        checkCastWithParseError("2015-03-128")
-        checkCastWithParseError("2015/03/18")
-        checkCastWithParseError("2015.03.18")
-        checkCastWithParseError("20150318")
-        checkCastWithParseError("2015-031-8")
-        checkCastWithParseError("2015-03-18ABC")
-        checkCastWithParseError("abdef")
-      }
+      checkCastWithParseError("12345")
+      checkCastWithParseError("12345-12-18")
+      checkCastWithParseError("2015-13-18")
+      checkCastWithParseError("2015-03-128")
+      checkCastWithParseError("2015/03/18")
+      checkCastWithParseError("2015.03.18")
+      checkCastWithParseError("20150318")
+      checkCastWithParseError("2015-031-8")
+      checkCastWithParseError("2015-03-18ABC")
+      checkCastWithParseError("abdef")
     }
   }