diff --git a/nx/include/switch/services/hid.h b/nx/include/switch/services/hid.h
index 4d3c77b7d..28412c5b4 100644
--- a/nx/include/switch/services/hid.h
+++ b/nx/include/switch/services/hid.h
@@ -1,6 +1,7 @@
 /**
  * @file hid.h
  * @brief Human input device (hid) service IPC wrapper.
+ * @note Applet services must be initialized.
  * @author shinyquagsire23
  * @author yellows8
  * @copyright libnx Authors