diff --git a/sql/catalyst/src/test/java/org/apache/spark/sql/catalyst/expressions/ExpressionImplUtilsSuite.scala b/sql/catalyst/src/test/java/org/apache/spark/sql/catalyst/expressions/ExpressionImplUtilsSuite.scala
index f521cbcf2e0e5..40e6182e587b3 100644
--- a/sql/catalyst/src/test/java/org/apache/spark/sql/catalyst/expressions/ExpressionImplUtilsSuite.scala
+++ b/sql/catalyst/src/test/java/org/apache/spark/sql/catalyst/expressions/ExpressionImplUtilsSuite.scala
@@ -390,10 +390,12 @@ class ExpressionImplUtilsSuite extends SparkFunSuite {
       UTF8String.fromString("A"), except = false)
     validateUTF8(UTF8String.fromBytes(Array[Byte](0x61)),
       UTF8String.fromString("a"), except = false)
+    // scalastyle:off nonascii
     validateUTF8(UTF8String.fromBytes(Array[Byte](0x80.toByte)),
       UTF8String.fromString("\uFFFD"), except = true)
     validateUTF8(UTF8String.fromBytes(Array[Byte](0xFF.toByte)),
       UTF8String.fromString("\uFFFD"), except = true)
+    // scalastyle:on nonascii
   }
 
   test("TryValidate UTF8 string") {