diff --git a/config.h.cmake.in b/config.h.cmake.in
index 26a5b4773b..1a569ab8a3 100644
--- a/config.h.cmake.in
+++ b/config.h.cmake.in
@@ -46,7 +46,7 @@ are set when opening a binary file on Windows. */
    #define read _read
    #define lseek _lseeki64
 
-   #ifndef __clang__
+   #if 0
    #define fstat _fstat64
    #endif