diff --git a/src/evalbuffer.c b/src/evalbuffer.c
index 376c1fe..3fed389 100644
--- a/src/evalbuffer.c
+++ b/src/evalbuffer.c
@@ -68,7 +68,7 @@
     save_magic = p_magic;
     p_magic = TRUE;
     save_cpo = p_cpo;
-    p_cpo = (char_u *)"";
+    p_cpo = empty_option;
 
     buf = buflist_findnr(buflist_findpat(name, name + STRLEN(name),
 						    TRUE, FALSE, curtab_only));