diff --git a/src/misc2.c b/src/misc2.c
index 657e164..278cc33 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -643,6 +643,7 @@
     long	lastcol;
     colnr_T	s, e;
     int		retval = FALSE;
+    long        siso = get_sidescrolloff_value();
 
     changed_cline_bef_curs();
     lastcol = curwin->w_leftcol + curwin->w_width - curwin_col_off() - 1;
@@ -652,15 +653,15 @@
      * If the cursor is right or left of the screen, move it to last or first
      * character.
      */
-    if (curwin->w_virtcol > (colnr_T)(lastcol - p_siso))
+    if (curwin->w_virtcol > (colnr_T)(lastcol - siso))
     {
 	retval = TRUE;
-	coladvance((colnr_T)(lastcol - p_siso));
+	coladvance((colnr_T)(lastcol - siso));
     }
-    else if (curwin->w_virtcol < curwin->w_leftcol + p_siso)
+    else if (curwin->w_virtcol < curwin->w_leftcol + siso)
     {
 	retval = TRUE;
-	(void)coladvance((colnr_T)(curwin->w_leftcol + p_siso));
+	(void)coladvance((colnr_T)(curwin->w_leftcol + siso));
     }
 
     /*