diff --git a/Makefile.nmake b/Makefile.nmake
index 80a0c11088..da418e205e 100644
--- a/Makefile.nmake
+++ b/Makefile.nmake
@@ -14,7 +14,7 @@ LIBFLAGS=/nologo
 CORE_OBJS=event.obj buffer.obj bufferevent.obj bufferevent_sock.obj \
 	bufferevent_pair.obj listener.obj evmap.obj log.obj evutil.obj \
 	strlcpy.obj signal.obj bufferevent_filter.obj evthread.obj \
-	bufferevent_ratelim.obj
+	bufferevent_ratelim.obj evutil_rand.obj
 WIN_OBJS=win32select.obj evthread_win32.obj buffer_iocp.obj \
 	event_iocp.obj bufferevent_async.obj
 EXTRA_OBJS=event_tagging.obj http.obj evdns.obj evrpc.obj
diff --git a/arc4random.c b/arc4random.c
index c14fc53620..28f0cdbf54 100644
--- a/arc4random.c
+++ b/arc4random.c
@@ -74,6 +74,11 @@ struct arc4_stream {
 	unsigned char s[256];
 };
 
+#ifdef WIN32
+#define getpid _getpid
+#define pid_t int
+#endif
+
 static int rs_initialized;
 static struct arc4_stream rs;
 static pid_t arc4_stir_pid;
@@ -217,9 +222,6 @@ arc4_stir(void)
 	arc4_count = BYTES_BEFORE_RESEED;
 }
 
-#ifdef WIN32
-#define getpid _getpid
-#endif
 
 static void
 arc4_stir_if_needed(void)