diff --git a/index.html b/index.html
index d69f3b9d..151aecf5 100644
--- a/index.html
+++ b/index.html
@@ -536,6 +536,7 @@ <h3 id="customize">Customizing the look and feel</h3>
       <ul>
         <li><code>--esp-tools-button-color</code></li>
         <li><code>--esp-tools-button-text-color</code></li>
+        <li><code>--esp-tools-button-border-radius</code></li>
       </ul>
       <p>There are also some attributes that can be used for styling:</p>
       <table>
diff --git a/src/install-button.ts b/src/install-button.ts
index 3643e0ee..fbe632ab 100644
--- a/src/install-button.ts
+++ b/src/install-button.ts
@@ -17,7 +17,7 @@ export class InstallButton extends HTMLElement {
     color: var(--esp-tools-button-text-color, #fff);
     background-color: var(--esp-tools-button-color, #03a9f4);
     border: none;
-    border-radius: var(--esp-tools-border-radius, 9999px);
+    border-radius: var(--esp-tools-button-border-radius, 9999px);
   }
   button::before {
     content: " ";
@@ -27,10 +27,7 @@ export class InstallButton extends HTMLElement {
     left: 0;
     right: 0;
     opacity: 0.2;
-    border-radius: var(--esp-tools-border-radius, 9999px);
-  }
-  button:hover {
-    box-shadow: 0 4px 8px 0 rgba(0,0,0,.14), 0 1px 7px 0 rgba(0,0,0,.12), 0 3px 1px -1px rgba(0,0,0,.2);
+    border-radius: var(--esp-tools-button-border-radius, 9999px);
   }
   button:hover::before {
     background-color: rgba(255,255,255,.8);