diff --git a/ChangeLog b/ChangeLog
index 142284afd3..b592a46f96 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jan 27 02:06:38 2003  NAKAMURA Usaku <usa@ruby-lang.org>
+
+	* error.c (get_syserror): some Windows' errno have 5 digits.
+
 Sun Jan 26 19:23:10 2003  NAKAMURA Usaku <usa@ruby-lang.org>
 
 	* instruby.rb ($mflags.set?): Check $make instead of $nmake, sinse
diff --git a/error.c b/error.c
index 6f958aa2d0..272390139c 100644
--- a/error.c
+++ b/error.c
@@ -495,8 +495,8 @@ get_syserr(int n)
     VALUE error;
 
     if (!st_lookup(syserr_tbl, n, &error)) {
-	char name[6];
-      
+	char name[8];	/* some Windows' errno have 5 digits. */
+
 	sprintf(name, "E%03d", n);
 	error = set_syserr(n, name);
     }