diff --git a/ChangeLog b/ChangeLog
index 4644de9fa8..3a0cab7ec5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Oct 16 16:09:01 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/win32.c (rb_w32_spawn): `\'' is also quote character.
+
 Fri Oct 16 13:40:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* gc.h (rb_gc_debug_body): constified.
diff --git a/win32/win32.c b/win32/win32.c
index f24a6ab2dc..35b52df1d8 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -1054,7 +1054,7 @@ rb_w32_spawn(int mode, const char *cmd, const char *prog)
 	    cmd = tmp;
 	}
 	else {
-	    int len = 0, quote = (*cmd == '"') ? '"' : 0;
+	    int len = 0, quote = (*cmd == '"') ? '"' : (*cmd == '\'') ? '\'' : 0;
 	    for (prog = cmd + !!quote;; prog = CharNext(prog)) {
 		if (!*prog) {
 		    len = prog - cmd;