diff --git a/ChangeLog b/ChangeLog
index 951694ad0a..271e46c0fe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Thu Dec 18 14:25:17 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* signal.c (ruby_signal): since SIGKILL is not supported by MSVCRT,
+	  should be treated before calling signal(2).
+	  [Bug #10615]
+
 Wed Dec 17 12:20:56 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* compile.c (rb_method_for_self_aref, rb_method_for_self_aset):
diff --git a/signal.c b/signal.c
index 67990856ea..c9e6ffd52e 100644
--- a/signal.c
+++ b/signal.c
@@ -634,6 +634,17 @@ posix_signal(int signum, sighandler_t handler)
     return ruby_signal(signum, handler);
 }
 
+#elif defined _WIN32
+static inline sighandler_t
+ruby_signal(int signum, sighandler_t handler)
+{
+    if (signum == SIGKILL) {
+	errno = EINVAL;
+	return SIG_ERR;
+    }
+    return signal(signum, handler);
+}
+
 #else /* !POSIX_SIGNAL */
 #define ruby_signal(sig,handler) (/* rb_trap_accept_nativethreads[(sig)] = 0,*/ signal((sig),(handler)))
 #if 0 /* def HAVE_NATIVETHREAD */