diff --git a/setup.h.in b/setup.h.in
index f94f839451..b9ba86f943 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -125,9 +125,6 @@
 #undef __WINDOWS__
 #endif
 
-#ifndef __WIN95__
-#undef __WIN95__
-#endif
 #ifndef __WIN32__
 #undef __WIN32__
 #endif