diff --git a/hardware/common/scpi_tcp.c b/hardware/common/scpi_tcp.c
index f12d1fa5..8f4ea21d 100644
--- a/hardware/common/scpi_tcp.c
+++ b/hardware/common/scpi_tcp.c
@@ -17,6 +17,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _WIN32_WINNT 0x0501
+
 #include "libsigrok.h"
 #include "libsigrok-internal.h"