diff --git a/src/libei.h b/src/libei.h
index a9588dd..ba1c451 100644
--- a/src/libei.h
+++ b/src/libei.h
@@ -1474,6 +1474,10 @@ ei_device_start_emulating(struct ei_device *device, uint32_t sequence);
  * Notify the EIS implementation that the given device is no longer sending
  * events. See ei_device_start_emulating() for details.
  *
+ * If the device is not logically in a neutral state, that state is left
+ * as-is. It is the caller's responsibility to release any buttons, keys, touch
+ * sequences, etc. when stopping emulation to avoid adverse side effects.
+ *
  * This method is only available on an ei sender context.
  */
 void