diff --git a/lib/modem-info.js b/lib/modem-info.js
index 5e11643..d4ea936 100644
--- a/lib/modem-info.js
+++ b/lib/modem-info.js
@@ -28,8 +28,9 @@ if (!config.disable_idle_check) {
             Math.min(modemInfo.lastWriteTs, modemInfo.lastReadTs),
         );
 
-        if (deltaMs >= (config.max_last_data_age_ms || DEFAULT_MAX_LAST_DATA_AGE_MS)) {
-            logger.warn(`Modem idle for ${deltaMs} ms. Modem stucked? Terminating!`);
+        const maxLastDataAgeMs = config.max_last_data_age_ms || DEFAULT_MAX_LAST_DATA_AGE_MS;
+        if (deltaMs >= maxLastDataAgeMs) {
+            logger.warn(`Modem idle for more than ${maxLastDataAgeMs} ms. Stucked modem? Terminating!`, { deltaMs });
             process.exit(1);
         }
     }, config.interval_beetwen_signal_strength_ms || DEFAULT_INTERVAL_BETWEEN_IDLE_CHECK_MS);