diff --git a/src/optiondefs.h b/src/optiondefs.h
index 7ba874e..89eaf7a 100644
--- a/src/optiondefs.h
+++ b/src/optiondefs.h
@@ -944,7 +944,7 @@
 			    {(char_u *)"", (char_u *)0L}
 			    SCTX_INIT},
     {"fillchars",   "fcs",  P_STRING|P_VI_DEF|P_RALL|P_ONECOMMA|P_NODUP,
-			    (char_u *)&p_fcs, PV_FCS, NULL,
+			    (char_u *)&p_fcs, PV_FCS, did_set_chars_option,
 			    {(char_u *)"vert:|,fold:-,eob:~,lastline:@",
 								  (char_u *)0L}
 			    SCTX_INIT},
@@ -1575,7 +1575,7 @@
 			    (char_u *)VAR_WIN, PV_LIST, NULL,
 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
     {"listchars",   "lcs",  P_STRING|P_VI_DEF|P_RALL|P_ONECOMMA|P_NODUP,
-			    (char_u *)&p_lcs, PV_LCS, NULL,
+			    (char_u *)&p_lcs, PV_LCS, did_set_chars_option,
 			    {(char_u *)"eol:$", (char_u *)0L} SCTX_INIT},
     {"loadplugins", "lpl",  P_BOOL|P_VI_DEF,
 			    (char_u *)&p_lpl, PV_NONE, NULL,