diff --git a/src/xdisp.c b/src/xdisp.c
index 813858422d4..89b295932ed 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -18089,7 +18089,7 @@ compute_window_start_on_continuation_line (struct window *w)
          point will not be visible with any window start we
          compute.  */
       if (IT_CHARPOS (it) <= PT
-	  || (CHARPOS (start_pos) - IT_CHARPOS (it)
+	  && (CHARPOS (start_pos) - IT_CHARPOS (it)
 	      /* PXW: Do we need upper bounds here?  */
 	      < WINDOW_TOTAL_LINES (w) * WINDOW_TOTAL_COLS (w)))
 	{