diff --git a/src/main/scala/Testing.scala b/src/main/scala/Testing.scala
index a010975b..2540d83b 100644
--- a/src/main/scala/Testing.scala
+++ b/src/main/scala/Testing.scala
@@ -136,8 +136,8 @@ object TestGenerator extends App with FileSystemUtilities {
       Class.forName(s"$projectName.$configClassName").newInstance.asInstanceOf[Config]
     } catch {
       case e: java.lang.ClassNotFoundException =>
-        throwException(s"Could not find the cde.Config subclass you asked for " +
-                        "(i.e. \"$configClassName\"), did you misspell it?", e)
+        throwException("Unable to find configClassName \"" + configClassName +
+                       "\", did you misspell it?", e)
     }
   val world = config.toInstance
   val paramsFromConfig: Parameters = Parameters.root(world)
@@ -165,7 +165,7 @@ object TestGenerator extends App with FileSystemUtilities {
   val v = createOutputFile(configClassName + ".knb")
   v.write(world.getKnobs)
   v.close
-  val d = new java.io.FileOutputStream(Driver.targetDir + configClassName + ".dtb")
+  val d = new java.io.FileOutputStream(Driver.targetDir + "/" + configClassName + ".dtb")
   d.write(paramsFromConfig(DeviceTree))
   d.close
   val w = createOutputFile(configClassName + ".cst")
diff --git a/src/main/scala/Vlsi.scala b/src/main/scala/Vlsi.scala
index 4f9a42aa..bb4f6f5c 100644
--- a/src/main/scala/Vlsi.scala
+++ b/src/main/scala/Vlsi.scala
@@ -11,7 +11,7 @@ class MemDessert(topParams: Parameters) extends Module {
   implicit val p = topParams
   val io = new MemDesserIO(p(HtifKey).width)
   val x = Module(new MemDesser(p(HtifKey).width))
-  io.narrow <> x.io.narrow
+  x.io.narrow <> io.narrow
   io.wide <> x.io.wide
 }