Change throwInternalError to use a String instead of Option[String] (#777)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/main/scala/firrtl/Compiler.scala b/src/main/scala/firrtl/Compiler.scala
index d43f415a..ca74e5e1 100644
--- a/src/main/scala/firrtl/Compiler.scala
+++ b/src/main/scala/firrtl/Compiler.scala
@@ -330,8 +330,8 @@ object CompilerUtils extends LazyLogging {
           Seq(new IRToWorkingIR, new ResolveAndCheck, new transforms.DedupModules,
               new HighFirrtlToMiddleFirrtl) ++ getLoweringTransforms(MidForm, outputForm)
         case MidForm => Seq(new MiddleFirrtlToLowFirrtl) ++ getLoweringTransforms(LowForm, outputForm)
-        case LowForm => throwInternalError(Some("getLoweringTransforms - LowForm")) // should be caught by if above
-        case UnknownForm => throwInternalError(Some("getLoweringTransforms - UnknownForm")) // should be caught by if above
+        case LowForm => throwInternalError("getLoweringTransforms - LowForm") // should be caught by if above
+        case UnknownForm => throwInternalError("getLoweringTransforms - UnknownForm") // should be caught by if above
       }
     }
   }