diff --git a/addons/web_editor/controllers/main.py b/addons/web_editor/controllers/main.py
index 0b0806b3f39..f72adff467c 100644
--- a/addons/web_editor/controllers/main.py
+++ b/addons/web_editor/controllers/main.py
@@ -115,7 +115,9 @@ class Web_Editor(http.Controller):
         image = Image.new("RGBA", (width, height), color)
         draw = ImageDraw.Draw(image)
 
-        boxw, boxh = draw.textsize(icon, font=font_obj)
+        box = draw.textbbox((0, 0), icon, font=font_obj)
+        boxw = box[2] - box[0]
+        boxh = box[3] - box[1]
         draw.text((0, 0), icon, font=font_obj)
         left, top, right, bottom = image.getbbox()