diff --git a/src/hardware/hantek-6xxx/protocol.h b/src/hardware/hantek-6xxx/protocol.h
index 73d8f868..a106fb4b 100644
--- a/src/hardware/hantek-6xxx/protocol.h
+++ b/src/hardware/hantek-6xxx/protocol.h
@@ -60,7 +60,11 @@
 #define FLUSH_PACKET_SIZE	1024
 
 #define MIN_PACKET_SIZE		512
+#ifdef _WIN32
+#define MAX_PACKET_SIZE		(2 * 1024 * 1024)
+#else
 #define MAX_PACKET_SIZE		(12 * 1024 * 1024)
+#endif
 
 #define HANTEK_EP_IN		0x86
 #define USB_INTERFACE		0