diff --git a/src/screen.c b/src/screen.c
index d34c4b2..69c1f40 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -4598,7 +4598,7 @@
 	    /*
 	     * Handling of non-printable characters.
 	     */
-	    if (!(chartab[c & 0xff] & CT_PRINT_CHAR))
+	    if (!vim_isprintc(c))
 	    {
 		/*
 		 * when getting a character from the file, we may have to