--- a/absyntax_utils/add_en_eno_param_decl.hh	Fri Nov 16 10:26:23 2012 +0100
+++ b/absyntax_utils/add_en_eno_param_decl.hh	Mon Nov 19 22:53:43 2012 +0100
@@ -42,6 +42,9 @@
  * and eno_param_declaration_c objects.
  */
 
+#ifndef _ADD_EN_ENO_PARAM_DECL_HH
+#define _ADD_EN_ENO_PARAM_DECL_HH
+
 #include "../absyntax/visitor.hh"
 
 
@@ -96,9 +99,11 @@
 
 }; // function_param_iterator_c
 
+#endif /* _ADD_EN_ENO_PARAM_DECL_HH */
 
 
 
 
 
 
+