diff --git a/ui/components/app/signature-request/signature-request-footer/signature-request-footer.component.js b/ui/components/app/signature-request/signature-request-footer/signature-request-footer.component.js
index 37df2a177..a42e4f2ae 100644
--- a/ui/components/app/signature-request/signature-request-footer/signature-request-footer.component.js
+++ b/ui/components/app/signature-request/signature-request-footer/signature-request-footer.component.js
@@ -6,7 +6,7 @@ export default class SignatureRequestFooter extends PureComponent {
   static propTypes = {
     cancelAction: PropTypes.func.isRequired,
     signAction: PropTypes.func.isRequired,
-    disabled: PropTypes.boolean,
+    disabled: PropTypes.bool,
   };
 
   static contextTypes = {
diff --git a/ui/components/app/signature-request/signature-request.component.js b/ui/components/app/signature-request/signature-request.component.js
index 4acfac4c0..44c0f38bd 100644
--- a/ui/components/app/signature-request/signature-request.component.js
+++ b/ui/components/app/signature-request/signature-request.component.js
@@ -17,7 +17,7 @@ export default class SignatureRequest extends PureComponent {
     isLedgerWallet: PropTypes.bool,
     cancel: PropTypes.func.isRequired,
     sign: PropTypes.func.isRequired,
-    hardwareWalletRequiresConnection: PropTypes.func.isRequired,
+    hardwareWalletRequiresConnection: PropTypes.bool.isRequired,
   };
 
   static contextTypes = {