diff --git a/include/SDL_endian.h b/include/SDL_endian.h
index fcc428eb22..96aca54c62 100644
--- a/include/SDL_endian.h
+++ b/include/SDL_endian.h
@@ -33,7 +33,7 @@
 #if defined(_MSC_VER) && (_MSC_VER >= 1400)
 /* As of Clang 11, '_m_prefetchw' is conflicting with the winnt.h's version,
    so we define the needed '_m_prefetch' here as a pseudo-header, until the issue is fixed. */
-#if defined(__clang__) && !SDL_HAS_BUILTIN(_m_prefetch)
+#if defined(__clang__) &&  !_SDL_HAS_BUILTIN(_m_prefetch)
 #ifndef __PRFCHWINTRIN_H
 #define __PRFCHWINTRIN_H
 static __inline__ void __attribute__((__always_inline__, __nodebug__))