diff --git a/modem-tester.js b/modem-tester.js
index 57e5c82..ff636d5 100644
--- a/modem-tester.js
+++ b/modem-tester.js
@@ -29,9 +29,9 @@ const port = new SerialPort(config.modem.device, { baudRate: 115200 }, async (er
     await modemCommands.queryCOPSAndSignalQuality();
     logger.info('Modem state', modemInfo);
 
-    setInterval(() => {
-        modemCommands.queryIMEIAndIMSI();
-        modemCommands.queryCOPSAndSignalQuality();
+    setInterval(async () => {
+        await modemCommands.queryIMEIAndIMSI();
+        await modemCommands.queryCOPSAndSignalQuality();
         logger.info('Modem state', modemInfo);
     }, (config && config.interval_beetwen_signal_strength_ms) || 30000);
 });