diff --git a/src/ui.c b/src/ui.c
index 570b848..db13555 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -3162,15 +3162,15 @@
     /* try to advance to the specified column */
     int		count = 0;
     char_u	*ptr;
-    char_u	*start;
+    char_u	*line;
 
-    start = ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
+    line = ptr = ml_get_buf(wp->w_buffer, lnum, FALSE);
     while (count < vcol && *ptr != NUL)
     {
-	count += win_lbr_chartabsize(wp, ptr, count, NULL);
+	count += win_lbr_chartabsize(wp, line, ptr, count, NULL);
 	mb_ptr_adv(ptr);
     }
-    return (int)(ptr - start);
+    return (int)(ptr - line);
 }
 #endif