diff --git a/test-chmtime.c b/test-chmtime.c
index 90da448ebe..b6dc548a2a 100644
--- a/test-chmtime.c
+++ b/test-chmtime.c
@@ -3,6 +3,38 @@
 
 static const char usage_str[] = "(+|=|=+|=-|-)<seconds> <file>...";
 
+#ifdef __MINGW32__
+static inline void time_t_to_filetime(time_t t, FILETIME *ft)
+{
+	long long winTime = t * 10000000LL + 116444736000000000LL;
+	ft->dwLowDateTime = winTime;
+	ft->dwHighDateTime = winTime >> 32;
+}
+
+int git_utime (const char *file_name, const struct utimbuf *times)
+{
+	FILETIME mft, aft;
+	int fh, rc;
+
+	/* must have write permission */
+	if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
+	        return -1;
+
+	time_t_to_filetime(times->modtime, &mft);
+	time_t_to_filetime(times->actime, &aft);
+	if (!SetFileTime(_get_osfhandle(fh), NULL, &aft, &mft)) {
+		errno = EINVAL;
+		rc = -1;
+	} else
+		rc = 0;
+	close(fh);
+	return rc;
+}
+
+int git_utime(const char *file_name, const struct utimbuf *times);
+#define utime git_utime
+#endif /* __MINGW32__ */
+
 int main(int argc, const char *argv[])
 {
 	int i;