diff --git a/prometheus_piped.py b/prometheus_piped.py
index 14a78ad..56fe0c4 100755
--- a/prometheus_piped.py
+++ b/prometheus_piped.py
@@ -28,7 +28,7 @@ def fetch_registered_users(domain):
                 return int(match.group(1))
     except Exception as e:
         print(f"Error fetching registered users from {domain}: {e}")
-    return 0
+    return False
 
 
 def update_registered_users(domains, update_interval):
@@ -36,7 +36,8 @@ def update_registered_users(domains, update_interval):
         for domain in domains:
             # Fetch the number of registered users and update the gauge
             registered_users = fetch_registered_users(domain)
-            registered_users_gauge.labels(domain=domain).set(registered_users)
+            if registered_users:
+                registered_users_gauge.labels(domain=domain).set(registered_users)
         # Sleep for a while before fetching the data again
         time.sleep(update_interval)