diff --git a/WIN32-Code/event2/event-config.h b/WIN32-Code/event2/event-config.h
index c7f09ff2..93b590a9 100644
--- a/WIN32-Code/event2/event-config.h
+++ b/WIN32-Code/event2/event-config.h
@@ -192,6 +192,9 @@
 /* Define to 1 if `sin_len' is member of `struct sockaddr_in'. */
 /* #undef _EVENT_HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
 
+/* Define to 1 if the system has the type `struct sockaddr_storage'. */
+#define _EVENT_HAVE_STRUCT_SOCKADDR_STORAGE 1
+
 /* Define to 1 if you have the <sys/devpoll.h> header file. */
 /* #undef _EVENT_HAVE_SYS_DEVPOLL_H */
 
diff --git a/bufferevent_async.c b/bufferevent_async.c
index c00ade89..e4fde1f6 100644
--- a/bufferevent_async.c
+++ b/bufferevent_async.c
@@ -64,6 +64,11 @@
 #include "util-internal.h"
 #include "iocp-internal.h"
 
+#ifndef SO_UPDATE_CONNECT_CONTEXT
+/* Mingw is sometimes missing this */
+#define SO_UPDATE_CONNECT_CONTEXT 0x7010
+#endif
+
 /* prototypes */
 static int be_async_enable(struct bufferevent *, short);
 static int be_async_disable(struct bufferevent *, short);
@@ -404,11 +409,15 @@ connect_complete(struct event_overlapped *eo, ev_uintptr_t key,
 {
 	struct bufferevent_async *bev_a = upcast_connect(eo);
 	struct bufferevent *bev = &bev_a->bev.bev;
+	evutil_socket_t sock;
 
 	BEV_LOCK(bev);
 
 	EVUTIL_ASSERT(bev_a->bev.connecting);
 	bev_a->bev.connecting = 0;
+	sock = _evbuffer_overlapped_get_fd(bev_a->bev.bev.input);
+	/* XXXX Handle error? */
+	setsockopt(sock, SOL_SOCKET, SO_UPDATE_CONNECT_CONTEXT, NULL, 0);
 
 	if (ok)
 		bufferevent_async_set_connected(bev);
diff --git a/configure.in b/configure.in
index 462c0346..f9bef8a8 100644
--- a/configure.in
+++ b/configure.in
@@ -88,7 +88,7 @@ AC_SUBST(LIBTOOL_DEPS)
 
 AM_CONDITIONAL([BUILD_REGRESS], [test "$enable_libevent_regress" = "yes"])
 if test "$enable_libevent_regress" = "yes" ; then
-    CHECK_REGRESS=regress
+    CHECK_REGRESS='regress$(EXEENT)'
 else
     CHECK_REGRESS=
 fi
diff --git a/test/regress_http.c b/test/regress_http.c
index 62516b60..95511ae9 100644
--- a/test/regress_http.c
+++ b/test/regress_http.c
@@ -27,6 +27,7 @@
 
 #ifdef WIN32
 #include <winsock2.h>
+#include <ws2tcpip.h>
 #include <windows.h>
 #endif