diff --git a/Makefile.vars b/Makefile.vars
index d456713..29df043 100755
--- a/Makefile.vars
+++ b/Makefile.vars
@@ -99,7 +99,7 @@ endif
 # libcasio, defined here.
 
  DEP_libcasio_CFLAGS := -I include
- DEP_libcasio_LIBS := -L build -lcasio
+ DEP_libcasio_LIBS := -L build -lcasio $(if $(FOR_WINDOWS), -lws2_32, )
 
 # standard math library.
 
diff --git a/include/libcasio/builtin.h b/include/libcasio/builtin.h
index eb8bf1e..751126a 100644
--- a/include/libcasio/builtin.h
+++ b/include/libcasio/builtin.h
@@ -70,8 +70,8 @@ CASIO_EXTERN int CASIO_EXPORT casio_openusb_libusb
 # if defined(_WIN16) || defined(_WIN32) || defined(_WIN64) \
 	|| defined(__WINDOWS__)
 CASIO_EXTERN int CASIO_EXPORT casio_openusb_windows
-	OF((casio_stream_t **casio__stream,
-		int casio__bus, int casio__address));
+	OF((casio_stream_t **casio__stream
+		/*int casio__bus, int casio__address*/));
 CASIO_EXTERN int CASIO_EXPORT casio_opencom_windows
 	OF((casio_stream_t **casio__stream, const char *casio__path));
 # else
diff --git a/lib/stream/builtin/libusb/open.c b/lib/stream/builtin/libusb/open.c
index fccd755..7a03205 100644
--- a/lib/stream/builtin/libusb/open.c
+++ b/lib/stream/builtin/libusb/open.c
@@ -59,6 +59,7 @@ int CASIO_EXPORT casio_openusb_libusb(casio_stream_t **stream,
 
 	/* Get device list. */
 
+	msg((ll_info, "Getting the device list"));
 	device_count = libusb_get_device_list(context, &device_list);
 	if (device_count < 0) {
 		msg((ll_fatal, "couldn't get device list."));