diff --git a/esphome/__main__.py b/esphome/__main__.py
index bf2d68d834..a78413ff04 100644
--- a/esphome/__main__.py
+++ b/esphome/__main__.py
@@ -364,7 +364,7 @@ def command_update_all(args):
     def print_bar(middle_text):
         middle_text = " {} ".format(middle_text)
         width = len(click.unstyle(middle_text))
-        half_line = "=" * ((twidth - width) / 2)
+        half_line = "=" * ((twidth - width) // 2)
         click.echo("%s%s%s" % (half_line, middle_text, half_line))
 
     for f in files: