diff --git a/ROMFS/px4fmu_common/init.d/4020_hk_micro_pcb b/ROMFS/px4fmu_common/init.d/4020_hk_micro_pcb
index 369aa1eb4d..5bd67a9e41 100644
--- a/ROMFS/px4fmu_common/init.d/4020_hk_micro_pcb
+++ b/ROMFS/px4fmu_common/init.d/4020_hk_micro_pcb
@@ -1,6 +1,7 @@
 #!nsh
 #
 # Hobbyking Micro Integrated PCB Quadcopter
+# with SimonK ESC firmware and Mystery A1510 motors
 #
 # Thomas Gubler <thomasgubler@gmail.com>
 #