diff --git a/usercount.py b/usercount.py
index e235000..4587f75 100755
--- a/usercount.py
+++ b/usercount.py
@@ -88,6 +88,7 @@ def get_parameter( parameter, file_path ):
 instance_count = 0
 for instance in instances:
     if not "users" in instance: continue
+    if instance["users"] == None: continue
     user_count += instance["users"]
     if instance["up"] == True:
         instance_count += 1