1 files changed, 4 insertions, 0 deletions

diff --git a/lib-src/ntlib.c b/lib-src/ntlib.c
index f43117457cb..849abc2ede5 100644
--- a/lib-src/ntlib.c
+++ b/lib-src/ntlib.c
@@ -34,11 +34,15 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "ntlib.h"
 
+/* MinGW64 defines _TIMEZONE_DEFINED and defines 'struct timespec' in
+   its system headers.  */
+#ifndef _TIMEZONE_DEFINED
 struct timezone
 {
   int           tz_minuteswest; /* minutes west of Greenwich */
   int           tz_dsttime;     /* type of dst correction */
 };
+#endif
 
 #define MAXPATHLEN _MAX_PATH