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-rw-r--r--src/main/scala/firrtl/features/LetterCaseTransform.scala2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/scala/firrtl/features/LetterCaseTransform.scala b/src/main/scala/firrtl/features/LetterCaseTransform.scala
index 6d0c2b30..8686908a 100644
--- a/src/main/scala/firrtl/features/LetterCaseTransform.scala
+++ b/src/main/scala/firrtl/features/LetterCaseTransform.scala
@@ -8,7 +8,7 @@ import firrtl.transforms.ManipulateNames
import scala.reflect.ClassTag
/** Parent of transforms that do change the letter case of names in a FIRRTL circuit */
-abstract class LetterCaseTransform[A <: ManipulateNames[_]: ClassTag] extends ManipulateNames[A] {
+abstract class LetterCaseTransform[A <: ManipulateNames[?]: ClassTag] extends ManipulateNames[A] {
protected def newName: String => String