diff --git a/lib/pretty_text.rb b/lib/pretty_text.rb
index b328f230f37..e1341006f38 100644
--- a/lib/pretty_text.rb
+++ b/lib/pretty_text.rb
@@ -267,7 +267,7 @@ module PrettyText
     protect do
       v8.eval <<JS
       avatarTemplate = #{avatar_template.inspect};
-      size = #{size.to_i};
+      size = #{size.inspect};
 JS
       decorate_context(v8)
       v8.eval("Discourse.Utilities.avatarImg({ avatarTemplate: avatarTemplate, size: size });")