diff --git a/dao/src/main/java/org/thingsboard/server/dao/device/DeviceConnectivityServiceImpl.java b/dao/src/main/java/org/thingsboard/server/dao/device/DeviceConnectivityServiceImpl.java
index 74a248c1a3..ff07a5df5c 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/device/DeviceConnectivityServiceImpl.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/device/DeviceConnectivityServiceImpl.java
@@ -83,7 +83,7 @@ public class DeviceConnectivityServiceImpl implements DeviceConnectivityService
     private final DeviceProfileService deviceProfileService;
     private final AdminSettingsService adminSettingsService;
 
-    @Value("${device.connectivity.mqtts.pem_cert_file}")
+    @Value("${device.connectivity.mqtts.pem_cert_file:}")
     private String mqttsPemCertFile;
 
     @PostConstruct