diff --git a/src/fold.c b/src/fold.c
index bb268fb..b1c7031 100644
--- a/src/fold.c
+++ b/src/fold.c
@@ -2070,12 +2070,7 @@
 	}
 	else
 	{
-#ifdef FEAT_MBYTE
-	    if (has_mbyte)
-		s += (*mb_ptr2len_check)(s);
-	    else
-#endif
-		++s;
+	    mb_ptr_adv(s);
 	}
     }
 }