diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index 5a39ef2d1d..a935fa9df6 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -598,6 +598,7 @@ class Reline::LineEditor
     @dialog_lines_backup[:lines].each_with_index { |l, i|
       pr = prompt_list ? prompt_list[i] : prompt
       vl, _ = split_by_width(pr + l, @screen_size.last)
+      vl.compact!
       if i == @dialog_lines_backup[:line_index]
         visual_start = visual_lines.size + @dialog_lines_backup[:started_from]
       end
@@ -678,6 +679,7 @@ class Reline::LineEditor
     @dialog_lines_backup[:lines].each_with_index { |l, i|
       pr = prompt_list ? prompt_list[i] : prompt
       vl, _ = split_by_width(pr + l, @screen_size.last)
+      vl.compact!
       if i == @dialog_lines_backup[:line_index]
         visual_start = visual_lines.size + @dialog_lines_backup[:started_from] + @dialog_vertical_offset
       end