diff --git a/bibigrid/core/utility/validate_configuration.py b/bibigrid/core/utility/validate_configuration.py
index 0da48d84..1bfb948c 100644
--- a/bibigrid/core/utility/validate_configuration.py
+++ b/bibigrid/core/utility/validate_configuration.py
@@ -389,12 +389,8 @@ def check_network(self):
                         f"Subnet '{subnet_name_or_id}' not found on {provider.cloud_specification['identifier']}")
                     success = False
                 else:
-                    self.log.info(f"Subnet '{subnet_name_or_id}' found on {provider.cloud_specification['identifier']}")
-            else:
-                self.log.warning(f"Neither 'network' nor 'subnet' defined in configuration on "
-                                 f"{provider.cloud_specification['identifier']}.")
-                success = False
-        return success
+                    self.log.info(f"Subnet '{subnet_name_or_id}' found")
+        return bool(success and (network_name_or_id or subnet_name_or_id))
 
     def check_server_group(self):
         """