1 files changed, 2 insertions, 2 deletions
diff --git a/e_os.h b/e_os.h
index 45fef691a0..8ac36735d8 100644
--- a/e_os.h
+++ b/e_os.h
@@ -619,7 +619,7 @@ struct servent *PASCAL getservbyname(const char *, const char *);
 #    include <sys/select.h>
 #   endif
 
-#   if defined(sun)
+#   if defined(__sun)
 #    include <sys/filio.h>
 #   else
 #    ifndef VMS
@@ -661,7 +661,7 @@ struct servent *PASCAL getservbyname(const char *, const char *);
 
 # endif
 
-# if defined(sun) && !defined(__svr4__) && !defined(__SVR4)
+# if defined(__sun) && !defined(__svr4__) && !defined(__SVR4)
   /* include headers first, so our defines don't break it */
 #  include <stdlib.h>
 #  include <string.h>