diff --git a/ChangeLog b/ChangeLog
index 36f532ad69..768c3b8b1d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Feb 19 15:14:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/etc/etc.c (etc_each_group): defines only when Etc::Group is
+	  available.
+
 Thu Feb 19 15:11:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval_intern.h (translit_char): moved from ruby.c.
diff --git a/ext/etc/etc.c b/ext/etc/etc.c
index d0d28c0d72..0705606462 100644
--- a/ext/etc/etc.c
+++ b/ext/etc/etc.c
@@ -468,6 +468,7 @@ etc_group(VALUE obj)
     return Qnil;
 }
 
+#ifdef HAVE_GETPWENT
 /* Iterates for each entry in the /etc/group file if a block is given.
  * If no block is given, returns the enumerator.
  *
@@ -489,12 +490,11 @@ etc_group(VALUE obj)
 static VALUE
 etc_each_group(VALUE obj)
 {
-#ifdef HAVE_GETPWENT
     RETURN_ENUMERATOR(obj, 0, 0);
     each_group();
-#endif
     return obj;
 }
+#endif
 
 /* Resets the process of reading the /etc/group file, so that the next call
  * to getgrent will return the first entry again.