diff --git a/elab_scope.cc b/elab_scope.cc
index 728b897e2..b145bb887 100644
--- a/elab_scope.cc
+++ b/elab_scope.cc
@@ -180,22 +180,26 @@ static void collect_scope_specparams(Design*des, NetScope*scope,
 static void elaborate_scope_enumeration(Design*des, NetScope*scope,
 					enum_type_t*enum_type)
 {
+      std::vector<netrange_t> ranges;
+      netrange_t range;
       bool rc_flag;
-      assert(enum_type->range->size() == 1);
-      pform_range_t&range = enum_type->range->front();
-      NetExpr*msb_ex = elab_and_eval(des, scope, range.first, -1);
-      NetExpr*lsb_ex = elab_and_eval(des, scope, range.second, -1);
 
-      long msb = 0;
-      rc_flag = eval_as_long(msb, msb_ex);
-      assert(rc_flag);
-      long lsb = 0;
-      rc_flag = eval_as_long(lsb, lsb_ex);
-      assert(rc_flag);
+      if (enum_type->range.get())
+	    evaluate_ranges(des, scope, enum_type, ranges, *enum_type->range);
+
+      if (!ranges.empty()) {
+	    range = ranges.front();
+	    if (ranges.size() > 1) {
+		  cerr << enum_type->get_fileline() << ": error: "
+		       << "Enum type must not have more than 1 packed dimension."
+		       << endl;
+		  des->errors++;
+	    }
+      }
 
       netenum_t*use_enum = new netenum_t(enum_type->base_type,
 					 enum_type->signed_flag,
-					 enum_type->integer_flag, msb, lsb,
+					 enum_type->integer_flag, range,
 					 enum_type->names->size(),
 					 enum_type);
 
diff --git a/netenum.cc b/netenum.cc
index 0ec7ca33d..bb53088bc 100644
--- a/netenum.cc
+++ b/netenum.cc
@@ -24,10 +24,10 @@
 using namespace std;
 
 netenum_t::netenum_t(ivl_variable_type_t btype, bool signed_flag,
-		     bool integer_flag, long msb, long lsb, size_t name_count,
+		     bool integer_flag, const netrange_t &range, size_t name_count,
 		     enum_type_t*enum_type)
 : base_type_(btype), enum_type_(enum_type), signed_flag_(signed_flag),
-  integer_flag_(integer_flag), msb_(msb), lsb_(lsb),
+  integer_flag_(integer_flag), range_(range),
   names_(name_count), bits_(name_count)
 {
 }
@@ -56,26 +56,19 @@ bool netenum_t::packed() const
 
 long netenum_t::packed_width() const
 {
-      if (msb_ >= lsb_)
-	    return msb_ - lsb_ + 1;
-      else
-	    return lsb_ - msb_ + 1;
+	return range_.width();
 }
 
 vector<netrange_t> netenum_t::slice_dimensions() const
 {
-      vector<netrange_t> tmp (1);
-      tmp[0] = netrange_t(msb_, lsb_);
-      return tmp;
+      return vector<netrange_t>(1, range_);
 }
 
-
 bool netenum_t::insert_name(size_t name_idx, perm_string name, const verinum&val)
 {
       std::pair<std::map<perm_string,verinum>::iterator, bool> res;
 
-      assert((msb_-lsb_+1) > 0);
-      assert(val.has_len() && val.len() == (unsigned)(msb_-lsb_+1));
+      assert(val.has_len() && val.len() == packed_width());
 
 	// Insert a map of the name to the value. This also gets a
 	// flag that returns true if the  name is unique, or false
diff --git a/netenum.h b/netenum.h
index 8ff8a9063..b05675cfe 100644
--- a/netenum.h
+++ b/netenum.h
@@ -35,7 +35,7 @@ class netenum_t : public LineInfo, public ivl_type_s {
 
     public:
       explicit netenum_t(ivl_variable_type_t base_type, bool signed_flag,
-			 bool isint_flag, long msb, long lsb,
+			 bool isint_flag, const netrange_t &range,
 			 size_t name_count, enum_type_t*enum_type);
       ~netenum_t();
 
@@ -77,7 +77,7 @@ class netenum_t : public LineInfo, public ivl_type_s {
       enum_type_t*enum_type_;
       bool signed_flag_;
       bool integer_flag_;
-      long msb_, lsb_;
+      netrange_t range_;
 
       std::map<perm_string,verinum> names_map_;
       std::vector<perm_string> names_;
diff --git a/pform.cc b/pform.cc
index 65fe6ebcb..91851d075 100644
--- a/pform.cc
+++ b/pform.cc
@@ -3575,8 +3575,6 @@ static void pform_set_enum(const struct vlltype&li, enum_type_t*enum_type,
 
       cur->set_signed(enum_type->signed_flag);
 
-      assert(enum_type->range.get() != 0);
-      assert(enum_type->range->size() == 1);
 	//XXXXcur->set_range(*enum_type->range, SR_NET);
 	// If this is an integer enumeration switch the wire to an integer.
       if (enum_type->integer_flag) {
@@ -3594,9 +3592,6 @@ static void pform_set_enum(const struct vlltype&li, enum_type_t*enum_type,
 	// IVL_VT_BOOL.
       assert(enum_type->base_type==IVL_VT_LOGIC || enum_type->base_type==IVL_VT_BOOL);
 
-      assert(enum_type->range.get() != 0);
-      assert(enum_type->range->size() == 1);
-
 	// Add the file and line information to the enumeration type.
       FILE_NAME(&(enum_type->li), li);