diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index d52b203..bcdf287 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -2816,7 +2816,7 @@
 {
     int	fd_tmp = mch_open(filename, O_RDONLY
 # ifdef WIN32
-			  O_BINARY | O_NOINHERIT
+			  | O_BINARY | O_NOINHERIT
 # endif
 			  , 0);