diff --git a/packages/redux-devtools-core/src/app/components/buttons/LockButton.js b/packages/redux-devtools-core/src/app/components/buttons/LockButton.js
index 7724c6e3..0bd642f7 100644
--- a/packages/redux-devtools-core/src/app/components/buttons/LockButton.js
+++ b/packages/redux-devtools-core/src/app/components/buttons/LockButton.js
@@ -25,7 +25,7 @@ class LockButton extends Component {
         title={this.props.locked ? 'Unlock changes' : 'Lock changes'}
         onClick={this.props.lockChanges}
       >
-        <LockIcon />
+        <IoIosLock />
       </Button>
     );
   }