diff --git a/agent.py b/agent.py
index 842b0cc..3647b4f 100644
--- a/agent.py
+++ b/agent.py
@@ -124,7 +124,12 @@ class ServerData:
 
             # Parse the output
             details = {}
-            details['model_number'] = re.search(r'Model Number:\s*(.*)', output).group(1)
+            model_number_match = re.search(r'Model Number:\s*(.*)', output)
+            if model_number_match is None:
+                logging.warning("Skipping device {} as it does not have a model number".format(device))
+                continue
+
+            details['model_number'] = model_number_match.group(1)
             details['serial_number'] = re.search(r'Serial Number:\s*(.*)', output).group(1)
             details['firmware_revision'] = re.search(r'Firmware Revision:\s*(.*)', output).group(1)
             details['transport'] = re.search(r'Transport:\s*(.*)', output).group(1)