diff --git a/src/xrt/drivers/arduino/device/device.ino b/src/xrt/drivers/arduino/device/device.ino
index fb973e427..62185dfb6 100644
--- a/src/xrt/drivers/arduino/device/device.ino
+++ b/src/xrt/drivers/arduino/device/device.ino
@@ -243,6 +243,6 @@ setup()
 
 	isConnected = false;
 
-	// IMU has it's own thread.
+	// IMU has its own thread.
 	thread.start(imu_thread);
 }