diff --git a/src/regexp.c b/src/regexp.c
index 60765d7..29b4081 100644
--- a/src/regexp.c
+++ b/src/regexp.c
@@ -5758,7 +5758,7 @@
       case SIDENT + ADD_NL:
 	while (count < maxcount)
 	{
-	    if (vim_isIDc(*scan) && (testval || !VIM_ISDIGIT(*scan)))
+	    if (vim_isIDc(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan)))
 	    {
 		mb_ptr_adv(scan);
 	    }
@@ -5819,7 +5819,7 @@
       case SFNAME + ADD_NL:
 	while (count < maxcount)
 	{
-	    if (vim_isfilec(*scan) && (testval || !VIM_ISDIGIT(*scan)))
+	    if (vim_isfilec(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan)))
 	    {
 		mb_ptr_adv(scan);
 	    }