diff --git a/Windows/XinputDevice.cpp b/Windows/XinputDevice.cpp
index 3c1ac1041f..d6294ec8fb 100644
--- a/Windows/XinputDevice.cpp
+++ b/Windows/XinputDevice.cpp
@@ -3,6 +3,10 @@
 #include <limits.h>
 #include <iostream>
 
+#ifndef XUSER_MAX_COUNT
+#define XUSER_MAX_COUNT 4
+#endif
+
 XinputDevice::XinputDevice() {
 	ZeroMemory( &this->prevState, sizeof(this->prevState) );
 	this->check_delay = 0;