diff --git a/win32/config.h b/win32/config.h
index 8450d231688e8d476579dfc54d3df06c6505936d..03e0688443800076cb138e2ea2e1267d6752c8ff 100644
--- a/win32/config.h
+++ b/win32/config.h
@@ -28,8 +28,6 @@ POSSIBILITY OF SUCH DAMAGE.
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define CELT_BUILD            1
-
 #define inline __inline
 
 #define USE_ALLOCA            1