diff --git a/README.md b/README.md
index 0057b52..8c46d93 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ asset:
   name: "foo.local"
   check: "hypervguest"
   config:
-    address: "192.168.1.2"
+    hypervisor: "192.168.1.2"
     guid: "01234567-0123-0123-0123-0123456789AB"
 ```
 
diff --git a/lib/wmiquery.py b/lib/wmiquery.py
index ad5baf8..39308d2 100644
--- a/lib/wmiquery.py
+++ b/lib/wmiquery.py
@@ -26,9 +26,10 @@ async def wmiconn(
         asset: Asset,
         asset_config: dict,
         check_config: dict) -> Tuple[Connection, Service]:
-    address = check_config.get('address')
-    if not address:
-        address = asset.name
+    hypervisor = check_config.get('hypervisor')
+    if hypervisor is None:
+        msg = 'missing hypervisor in collector configuration'
+        raise CheckException(msg)
     username = asset_config.get('username')
     password = asset_config.get('password')
     if None in (username, password):
@@ -44,7 +45,7 @@ async def wmiconn(
     else:
         domain = ''
 
-    conn = Connection(address, username, password, domain)
+    conn = Connection(hypervisor, username, password, domain)
     service = None
 
     try: