1 files changed, 14 insertions, 2 deletions

diff --git a/ugly.h b/ugly.h
index 6c4b873c..3938f639 100644
--- a/ugly.h
+++ b/ugly.h
@@ -1,5 +1,15 @@
-enum
-{
+/*
+** ugly.h
+** TecCGraf - PUC-Rio
+** $Id: $
+*/
+
+#ifndef ugly_h
+#define ugly_h
+
+/* This enum must have the same order of the array 'reserved' in lex.c */
+
+enum {
  U_and=128,
  U_do,
  U_else,
@@ -22,3 +32,5 @@ enum
  U_ne = '~'+128,
  U_sc = '.'+128
 };
+
+#endif