diff --git a/src/channels/whatsapp.ts b/src/channels/whatsapp.ts
index 3a4df46..9b05f96 100644
--- a/src/channels/whatsapp.ts
+++ b/src/channels/whatsapp.ts
@@ -170,6 +170,10 @@ export class WhatsAppChannel implements Channel {
             msg.message?.imageMessage?.caption ||
             msg.message?.videoMessage?.caption ||
             '';
+
+          // Skip protocol messages with no text content (encryption keys, read receipts, etc.)
+          if (!content) continue;
+
           const sender = msg.key.participant || msg.key.remoteJid || '';
           const senderName = msg.pushName || sender.split('@')[0];