diff --git a/src/misc/spin_lock.h b/src/misc/spin_lock.h
index b223abf..c2b390f 100644
--- a/src/misc/spin_lock.h
+++ b/src/misc/spin_lock.h
@@ -9,7 +9,12 @@ class spin_lock {
 		inline void lock() {
 			uint8_t round = 0;
 			while (locked.test_and_set(std::memory_order_acquire)) {
-				while(locked._M_i) { /* waiting 'till its zero so we can try an exchanged again; Atomic exchanges have a huge bug overhead to deal with! */
+                /* waiting 'till its zero so we can try an exchanged again; Atomic exchanges have a huge bug overhead to deal with! */
+#ifdef WIN32
+                while(locked._My_flag > 0) {
+#else
+                    while(locked._M_i) {
+#endif
 					//Yield when we're using this lock for a longer time, which we usually not doing
 					if(round++ % 8 == 0)
 						std::this_thread::yield();