diff --git a/src/renderer/components/TopBar.tsx b/src/renderer/components/TopBar.tsx
index 096bb82..4babd69 100644
--- a/src/renderer/components/TopBar.tsx
+++ b/src/renderer/components/TopBar.tsx
@@ -157,7 +157,14 @@ export default function TopBar({ onRegister }: TopBarProps) {
             borderRadius: '50%',
           }}
         >
-          <MinimizeIcon sx={{ color: 'white' }} />
+          <svg
+            className="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium"
+            focusable="false"
+            aria-hidden="true"
+            viewBox="0 0 24 24"
+          >
+            <path d="M6 12h12v1H6z" fill="white"></path>
+          </svg>
         </Button>
         <Button
           onClick={() => {