diff --git a/frontend/src/components/TradeBox/EncryptedChat/index.tsx b/frontend/src/components/TradeBox/EncryptedChat/index.tsx
index 07df7d7e..e4f6dea4 100644
--- a/frontend/src/components/TradeBox/EncryptedChat/index.tsx
+++ b/frontend/src/components/TradeBox/EncryptedChat/index.tsx
@@ -72,11 +72,12 @@ const EncryptedChat: React.FC<Props> = ({
   const sendToNostr = (content: string): void => {
     const slot = garage.getSlot();
     const coordinator = federation.getCoordinator(order.shortAlias);
+    const publicKey = order.is_maker ? order.taker_nostr_pubkey : order.maker_nostr_pubkey;
 
-    if (!slot?.nostrSecKey) return;
+    if (!slot?.nostrSecKey || !publicKey) return;
 
     const recipient = {
-      publicKey: order.is_maker ? order.taker_nostr_pubkey : order.maker_nostr_pubkey,
+      publicKey,
       relayUrl: coordinator.getRelayUrl(settings.network),
     };