diff --git a/custom_components/mikrotik_router/helper.py b/custom_components/mikrotik_router/helper.py
index 2722693..026e127 100644
--- a/custom_components/mikrotik_router/helper.py
+++ b/custom_components/mikrotik_router/helper.py
@@ -5,15 +5,9 @@
 #   format_attribute
 # ---------------------------
 def format_attribute(attr):
-    res = attr.replace("-", " ")
-    res = res.capitalize()
-    res = res.replace(" ip ", " IP ")
-    res = res.replace(" mac ", " MAC ")
-    res = res.replace(" mtu", " MTU")
-    res = res.replace("Sfp", "SFP")
-    res = res.replace("Poe", "POE")
-    res = res.replace(" tx", " TX")
-    res = res.replace(" rx", " RX")
+    res = attr.replace("-", "_")
+    res = res.replace(" ", "_")
+    res = res.lower()
     return res