diff --git a/lib/commands/device/utils.js b/lib/commands/device/utils.js
index b0128f56..5a2f5192 100644
--- a/lib/commands/device/utils.js
+++ b/lib/commands/device/utils.js
@@ -110,6 +110,7 @@ export async function prepareEmulator(adb) {
   const avdName = avd.replace('@', '');
   let isEmulatorRunning = true;
   try {
+    // This API implicitly modifies curDeviceId and emulatorPort properties of the adb instance
     await adb.getRunningAVDWithRetry(avdName, 5000);
   } catch (e) {
     this.log.debug(`Emulator '${avdName}' is not running: ${e.message}`);