diff --git a/src/ex_getln.c b/src/ex_getln.c
index 2475bb9..d292553 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -5040,7 +5040,7 @@
 	copy_option_part(&path, buf, MAXPATHL, ",");
 	if (STRLEN(buf) + STRLEN(file) + 2 < MAXPATHL)
 	{
-# ifdef WIN3264
+# if defined(MSWIN) || defined(MSDOS)
 	    /* Using the platform's path separator (\) makes vim incorrectly
 	     * treat it as an escape character, use '/' instead. */
 	    if (*buf != NUL && !after_pathsep(buf, buf + STRLEN(buf)))