1 files changed, 4 insertions, 2 deletions
diff --git a/src/main/scala/firrtl/passes/InferBinaryPoints.scala b/src/main/scala/firrtl/passes/InferBinaryPoints.scala
index a3e832f0..4b62d5f7 100644
--- a/src/main/scala/firrtl/passes/InferBinaryPoints.scala
+++ b/src/main/scala/firrtl/passes/InferBinaryPoints.scala
@@ -8,9 +8,9 @@ import firrtl.Mappers._
 import firrtl.annotations.{CircuitTarget, ModuleTarget, ReferenceTarget, Target}
 import firrtl.constraint.ConstraintSolver
 import firrtl.Transform
-import firrtl.options.{Dependency, PreservesAll}
+import firrtl.options.Dependency
 
-class InferBinaryPoints extends Pass with PreservesAll[Transform] {
+class InferBinaryPoints extends Pass {
 
   override def prerequisites =
     Seq( Dependency(ResolveKinds),
@@ -20,6 +20,8 @@ class InferBinaryPoints extends Pass with PreservesAll[Transform] {
 
   override def optionalPrerequisiteOf = Seq.empty
 
+  override def invalidates(a: Transform) = false
+
   private val constraintSolver = new ConstraintSolver()
 
   private def addTypeConstraints(r1: ReferenceTarget, r2: ReferenceTarget)(t1: Type, t2: Type): Unit = (t1,t2) match {