use sys.error instead of deprecated error

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/firrtl/passes/InferReadWrite.scala b/src/main/scala/firrtl/passes/InferReadWrite.scala
index 98777311..f863c7e7 100644
--- a/src/main/scala/firrtl/passes/InferReadWrite.scala
+++ b/src/main/scala/firrtl/passes/InferReadWrite.scala
@@ -178,7 +178,7 @@ class InferReadWrite(transID: TransID) extends Transform with SimpleRun {
   def execute(c: Circuit, map: AnnotationMap) = map get transID match {
     case Some(p) => p get CircuitName(c.main) match {
       case Some(InferReadWriteAnnotation(_, _)) => run(c, passSeq)
-      case _ => error("Unexpected annotation for InferReadWrite")
+      case _ => sys.error("Unexpected annotation for InferReadWrite")
     }
     case _ => TransformResult(c)
   }