diff --git a/include/Nazara/Prerequesites.hpp b/include/Nazara/Prerequesites.hpp
index ba3bf4fac..134f8b208 100644
--- a/include/Nazara/Prerequesites.hpp
+++ b/include/Nazara/Prerequesites.hpp
@@ -146,7 +146,7 @@
 
 #if defined(_WIN64) ||  defined(__amd64__) || defined(__x86_64__) || defined(__ia64__) || defined(__ia64) || \
     defined(_M_IA64) || defined(__itanium__) || defined(__MINGW64__)
-	#define NAZARA_PLATFORM_X64
+	#define NAZARA_PLATFORM_x64
 #endif
 
 #if !defined(NAZARA_DEBUG) && !defined(NDEBUG)