diff --git a/lib/zigbee.js b/lib/zigbee.js
index 718d5c6062..e93279685f 100644
--- a/lib/zigbee.js
+++ b/lib/zigbee.js
@@ -99,18 +99,25 @@ class Zigbee {
     }
 
     _acceptDevIncoming(devInfo, callback) {
+        logger.debug(
+            `Accept device incoming with ieeeAddr '${devInfo.ieeeAddr}' permit join is '${this.getPermitJoin()}'`
+        );
+
         if (this.getPermitJoin()) {
             if (settings.get().ban.includes(devInfo.ieeeAddr)) {
                 logger.info(`Banned device tried to connect (${devInfo.ieeeAddr})`);
                 callback(null, false);
             } else {
+                logger.debug(`Allowing device '${devInfo.ieeeAddr}' to join`);
                 callback(null, true);
             }
         } else {
             if (this.getAllClients().find((d) => d.ieeeAddr === devInfo.ieeeAddr)) {
                 // Allow already connected devices to rejoin.
+                logger.debug(`Allowing device '${devInfo.ieeeAddr}' to join (already connected device)`);
                 callback(null, true);
             } else {
+                logger.debug(`Not allowing '${devInfo.ieeeAddr}' to join`);
                 callback(null, false);
             }
         }