diff --git a/mingw-w64-headers/crt/_mingw.h.in b/mingw-w64-headers/crt/_mingw.h.in
index a5399e0..c113c29 100644
--- a/mingw-w64-headers/crt/_mingw.h.in
+++ b/mingw-w64-headers/crt/_mingw.h.in
@@ -390,7 +390,7 @@
 
 #ifndef __WIDL__
 
-#if defined (_WIN32) && !defined (_WIN64) && !defined (__MINGW_USE_VC2005_COMPAT) && !defined (_UCRT)
+#if defined (_WIN32) && !defined (_WIN64) && !defined (__MINGW_USE_VC2005_COMPAT) && !defined (_UCRT) && !(defined (_TIME_BITS) && _TIME_BITS == 64)
 #ifndef _USE_32BIT_TIME_T
 #define _USE_32BIT_TIME_T
 #endif