diff --git a/packages/react-signer/src/Modal.tsx b/packages/react-signer/src/Modal.tsx
index 1416423ad1..3b567dc677 100644
--- a/packages/react-signer/src/Modal.tsx
+++ b/packages/react-signer/src/Modal.tsx
@@ -244,7 +244,11 @@ class Signer extends React.PureComponent<Props, State> {
   private renderUnlock (): React.ReactNode {
     const { currentItem, isSendable, password, unlockError } = this.state;
 
-    if (!isSendable || !currentItem || currentItem.isUnsigned || this.isExternal(currentItem.accountId)) {
+    const { isExternal } = currentItem
+      ? this.isExternal(currentItem.accountId)
+      : { isExternal: false };
+
+    if (!isSendable || !currentItem || currentItem.isUnsigned || isExternal) {
       return null;
     }