diff --git a/ChangeLog b/ChangeLog
index 74c9650bc8..bed462768b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Feb 23 02:10:09 2009  Tanaka Akira  <akr@fsij.org>
+
+	* ext/socket/option.c (inspect_timeval): fix the size test.
+
 Sun Feb 22 22:42:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* string.c (tr_trans): should recalculate coderange.
diff --git a/ext/socket/option.c b/ext/socket/option.c
index 5563a7d8bb..7d62d73ff5 100644
--- a/ext/socket/option.c
+++ b/ext/socket/option.c
@@ -305,7 +305,7 @@ inspect_socktype(int level, int optname, VALUE data, VALUE ret)
 static int
 inspect_timeval(int level, int optname, VALUE data, VALUE ret)
 {
-    if (RSTRING_LEN(data) == sizeof(struct linger)) {
+    if (RSTRING_LEN(data) == sizeof(struct timeval)) {
         struct timeval s;
         memcpy((char*)&s, RSTRING_PTR(data), sizeof(s));
         rb_str_catf(ret, " %ld.%06ldsec", (long)s.tv_sec, (long)s.tv_usec);