diff --git a/web/chat/chat-input-bar.css b/web/chat/chat-input-bar.css
--- a/web/chat/chat-input-bar.css
+++ b/web/chat/chat-input-bar.css
@@ -60,7 +60,7 @@
   font-size: var(--m-font-16);
   font-weight: var(--semi-bold);
   color: var(--fg);
-  padding-left: 12px;
+  padding-left: 8px;
 }
 span.explanation {
   color: var(--permission-color);
diff --git a/web/chat/chat-input-bar.react.js b/web/chat/chat-input-bar.react.js
--- a/web/chat/chat-input-bar.react.js
+++ b/web/chat/chat-input-bar.react.js
@@ -178,11 +178,12 @@
       } else {
         buttonContent = (
           <>
-            <SWMansionIcon icon="plus" size={16} />
+            <SWMansionIcon icon="plus" size={24} />
             <p className={css.joinButtonText}>Join Thread</p>
           </>
         );
       }
+
       joinButton = (
         <div className={css.joinButtonContainer}>
           <button