diff --git a/crypto/bio/bss_dgram.c b/crypto/bio/bss_dgram.c
index 6912aa1278b59113c9be83ebb13d1840ca21e5fe..ec33423d7fa72d33480cba01d1844e4a7b87001a 100644
--- a/crypto/bio/bss_dgram.c
+++ b/crypto/bio/bss_dgram.c
@@ -1901,7 +1901,11 @@ static void get_current_time(struct timeval *t)
 
 	GetSystemTime(&st);
 	SystemTimeToFileTime(&st,&now.ft);
+#ifdef	__MINGW32__
+	now.ul -= 116444736000000000ULL;
+#else
 	now.ul -= 116444736000000000UI64;	/* re-bias to 1/1/1970 */
+#endif
 	t->tv_sec  = (long)(now.ul/10000000);
 	t->tv_usec = ((int)(now.ul%10000000))/10;
 #elif defined(OPENSSL_SYS_VMS)
diff --git a/ssl/d1_lib.c b/ssl/d1_lib.c
index 2b066e01651e396715c1730ac4561db9148c362c..2287ba6fa42ddffda61ac53051311394318474db 100644
--- a/ssl/d1_lib.c
+++ b/ssl/d1_lib.c
@@ -487,7 +487,11 @@ static void get_current_time(struct timeval *t)
 
 	GetSystemTime(&st);
 	SystemTimeToFileTime(&st,&now.ft);
+#ifdef	__MINGW32__
+	now.ul -= 116444736000000000ULL;
+#else
 	now.ul -= 116444736000000000UI64;	/* re-bias to 1/1/1970 */
+#endif
 	t->tv_sec  = (long)(now.ul/10000000);
 	t->tv_usec = ((int)(now.ul%10000000))/10;
 #elif defined(OPENSSL_SYS_VMS)