diff --git a/include/c11/threads.h b/include/c11/threads.h
index 45823df35b2..573348d8091 100644
--- a/include/c11/threads.h
+++ b/include/c11/threads.h
@@ -30,6 +30,9 @@
 #define EMULATED_THREADS_H_INCLUDED_
 
 #include <time.h>
+#ifdef _MSC_VER
+#include <thr/xtimec.h>  // for xtime
+#endif
 
 #ifndef TIME_UTC
 #define TIME_UTC 1
@@ -41,11 +44,13 @@
 typedef void (*tss_dtor_t)(void*);
 typedef int (*thrd_start_t)(void*);
 
+#ifndef _MSC_VER
 struct xtime {
     time_t sec;
     long nsec;
 };
 typedef struct xtime xtime;
+#endif
 
 
 /*-------------------- enumeration constants --------------------*/