diff --git a/src/drivers/camera_trigger/camera_trigger_params.c b/src/drivers/camera_trigger/camera_trigger_params.c
index 1d5e6e0d1c..35562222db 100644
--- a/src/drivers/camera_trigger/camera_trigger_params.c
+++ b/src/drivers/camera_trigger/camera_trigger_params.c
@@ -112,8 +112,8 @@ PARAM_DEFINE_INT32(TRIG_MODE, 0);
 /**
  * Camera trigger pin
  *
- * Selects which pin is used, ranges from 1 to 6 (AUX1-AUX6 on px4_fmu-v2 and the rail
- * pins on px4_fmu-v4). The PWM interface takes two pins per camera, while relay
+ * Selects which FMU pin is used (range: AUX1-AUX6 on Pixhawk controllers with an I/O board,
+ * MAIN1-MAIN6 on controllers without an I/O board. The PWM interface takes two pins per camera, while relay
  * triggers on every pin individually. Example: Value 56 would trigger on pins 5 and 6.
  * For GPIO mode Pin 6 will be triggered followed by 5. With a value of 65 pin 5 will
  * be triggered followed by 6. Pins may be non contiguous. I.E. 16 or 61.