diff --git a/keyboards/pabile/p20/rules.mk b/keyboards/pabile/p20/rules.mk
index 42efd50e2cf..2f6e8f1de75 100644
--- a/keyboards/pabile/p20/rules.mk
+++ b/keyboards/pabile/p20/rules.mk
@@ -1,12 +1,14 @@
 # MCU name
 MCU = atmega32u4
 
-# Boot Section Size in *bytes*
-#   Teensy halfKay
-#   Teensy++ halfKay
-#   Atmel DFU loader
-#   LUFA bootloader
-#   USBaspLoader
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
 # Build Options