diff --git a/_board/luatos_core_esp32c3.md b/_board/luatos_core_esp32c3.md
index 089a737c..f11595bd 100644
--- a/_board/luatos_core_esp32c3.md
+++ b/_board/luatos_core_esp32c3.md
@@ -37,7 +37,9 @@ A low-cost WiFi/BLE board based on ESP32-C3.
 There are 2 versions of this board, differing in the inclusion of a CH343 UART to USB component. This board definition targets the
 version without the CH343 which connects the built-in USB-CDC/JTAG to the USB-C connector.
 
-Onboard LDO can be disabled by grounding the PWB pin (15)
+Onboard LDO can be disabled by grounding the PWB pin (15).
+
+GPIO11 can only be used by setting the EFUSE_VDD_SPI_AS_GPIO efuse and building a custom Circuitpython image.
 
 ## Learn More