Change Enum to emit minimum widths of 1 (#574)

Fixes #554

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/chisel3/util/Enum.scala b/src/main/scala/chisel3/util/Enum.scala
index a3e39047..6ed0d422 100644
--- a/src/main/scala/chisel3/util/Enum.scala
+++ b/src/main/scala/chisel3/util/Enum.scala
@@ -10,7 +10,7 @@ import chisel3._
 trait Enum {
   /** Returns a sequence of Bits subtypes with values from 0 until n. Helper method. */
   protected def createValues(n: Int): Seq[UInt] =
-    (0 until n).map(_.U(log2Ceil(n).W))
+    (0 until n).map(_.U((1 max log2Ceil(n)).W))
 
   /** Returns n unique UInt values, use with unpacking to specify an enumeration.
     *