diff --git a/src/screen.c b/src/screen.c
index 36afc2d..e11bdc3 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -4456,6 +4456,10 @@
 		    /* TODO: is passing p for start of the line OK? */
 		    n_extra = win_lbr_chartabsize(wp, line, p, (colnr_T)vcol,
 								    NULL) - 1;
+		    if (c == TAB && n_extra + col > W_WIDTH(wp))
+			n_extra = (int)wp->w_buffer->b_p_ts
+				       - vcol % (int)wp->w_buffer->b_p_ts - 1;
+
 		    c_extra = ' ';
 		    if (vim_iswhite(c))
 		    {
diff --git a/src/version.c b/src/version.c
index 826679e..ae9fbad 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    517,
+/**/
     516,
 /**/
     515,