diff --git a/compat/mingw.h b/compat/mingw.h
index c30ae2d651..90a9e84a60 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -361,11 +361,13 @@ static inline int getrlimit(int resource, struct rlimit *rlp)
 #ifndef __MINGW64_VERSION_MAJOR
 #define off_t off64_t
 #define lseek _lseeki64
+#ifndef _MSC_VER
 struct timespec {
 	time_t tv_sec;
 	long tv_nsec;
 };
 #endif
+#endif
 
 struct mingw_stat {
     _dev_t st_dev;