diff --git a/custom_components/tplink_deco/coordinator.py b/custom_components/tplink_deco/coordinator.py
index 6d21457..78a73d2 100644
--- a/custom_components/tplink_deco/coordinator.py
+++ b/custom_components/tplink_deco/coordinator.py
@@ -27,7 +27,7 @@ def bytes_to_bits(bytes_count):
 
 
 def filter_invalid_ip(ip_address):
-    return None if ip_address == "UNKNOWN" else ip_address
+    return None if ip_address == "UNKNOWN" or not ip_address else ip_address
 
 
 def snake_case_to_title_space(str):
diff --git a/custom_components/tplink_deco/manifest.json b/custom_components/tplink_deco/manifest.json
index cd33cce..7275928 100644
--- a/custom_components/tplink_deco/manifest.json
+++ b/custom_components/tplink_deco/manifest.json
@@ -4,7 +4,7 @@
   "documentation": "https://github.com/amosyuen/ha-tplink-deco",
   "issue_tracker": "https://github.com/amosyuen/ha-tplink-deco/issues",
   "iot_class": "local_polling",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "config_flow": true,
   "dependencies": [],
   "codeowners": ["@amosyuen"],