diff --git a/src/proto.h b/src/proto.h
index f4f6476..c58992e 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -35,7 +35,7 @@
 # ifdef AMIGA
 #  include "os_amiga.pro"
 # endif
-# if defined(UNIX) || defined(__EMX__) || defined(VMS)
+# if defined(UNIX) || defined(VMS)
 #  include "os_unix.pro"
 # endif
 # ifdef WIN3264