diff --git a/homeassistant/util/pil.py b/homeassistant/util/pil.py
index 733f640ce48..6925cd03a4c 100644
--- a/homeassistant/util/pil.py
+++ b/homeassistant/util/pil.py
@@ -28,7 +28,7 @@ def draw_box(
     """
 
     line_width = 3
-    font_height = 8
+    font_height = 20
     y_min, x_min, y_max, x_max = box
     (left, right, top, bottom) = (
         x_min * img_width,
@@ -43,5 +43,8 @@ def draw_box(
     )
     if text:
         draw.text(
-            (left + line_width, abs(top - line_width - font_height)), text, fill=color
+            (left + line_width, abs(top - line_width - font_height)),
+            text,
+            fill=color,
+            font_size=font_height,
         )