diff --git a/src/screen.c b/src/screen.c
index 77fb3b9..4c2b70c 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -8052,7 +8052,9 @@
 	buf[utfc_char2bytes(off, buf)] = NUL;
 
 	out_str(buf);
-	if (utf_char2cells(ScreenLinesUC[off]) > 1)
+	if (utf_ambiguous_width(ScreenLinesUC[off]))
+	    screen_cur_col = 9999;
+	else if (utf_char2cells(ScreenLinesUC[off]) > 1)
 	    ++screen_cur_col;
     }
     else