diff --git a/ChangeLog b/ChangeLog
index 2d7f35b981..8c8db1e186 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,7 @@
-Thu Mar 12 05:12:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Thu Mar 12 05:14:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* random.c (fill_random_seed): enclosed conditionally used
+	  variables.
 
 	* thread_pthread.c (ruby_init_stack): range of rlim_cur may be
 	  larger than int.
diff --git a/random.c b/random.c
index 050619ef18..be720a0fe5 100644
--- a/random.c
+++ b/random.c
@@ -279,8 +279,10 @@ fill_random_seed(unsigned long seed[DEFAULT_SEED_CNT])
 {
     static int n = 0;
     struct timeval tv;
+#ifdef S_ISCHR
     int fd;
     struct stat statbuf;
+#endif
 
     memset(seed, 0, DEFAULT_SEED_LEN);