diff --git a/index.js b/index.js
index 16eef1b..085c8ef 100644
--- a/index.js
+++ b/index.js
@@ -44,7 +44,8 @@ function SMAHomeManager(log, config, api) {
 	// Validate configuration, since `homebridge-config-ui-x` is optional.
 	['signals', 'surplusSignals'].forEach(requiredTopLevelKey => {
 		if (!Object.keys(config).includes(requiredTopLevelKey)) {
-			throw new Error(`Invalid configuration: ${requiredTopLevelKey} key is missing. See config.schema.json.`);
+			log.warning(`Invalid configuration: ${requiredTopLevelKey} key is missing. See config.schema.json.`);
+			return;
 		}
 	});