diff --git a/ChangeLog b/ChangeLog
index 4c35b38225..c2bcdab59e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jul 28 16:06:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/win32.c (MAXPATHLEN): define before use.
+
 Mon Jul 28 16:01:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* thread_win32.[ch]: moved definitions of cond_every_entry and
diff --git a/win32/win32.c b/win32/win32.c
index 5c525d574b..dba0c71ce2 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -916,6 +916,12 @@ rb_w32_aspawn(int mode, const char *prog, char *const *argv)
     return rb_w32_spawn(mode, rb_w32_join_argv(cmd, argv), prog);
 }
 
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#else
+# define MAXPATHLEN 512
+#endif
+
 static struct ChildRecord *
 CreateChild(const char *cmd, const char *prog, SECURITY_ATTRIBUTES *psa,
 	    HANDLE hInput, HANDLE hOutput, HANDLE hError)
@@ -1107,12 +1113,6 @@ insert(const char *path, VALUE vinfo, void *enc)
     return 0;
 }
 
-#ifdef HAVE_SYS_PARAM_H
-# include <sys/param.h>
-#else
-# define MAXPATHLEN 512
-#endif
-
 
 static NtCmdLineElement **
 cmdglob(NtCmdLineElement *patt, NtCmdLineElement **tail)