diff --git a/src/drivers/distance_sensor/cm8jl65/cm8jl65_parser.cpp b/src/drivers/distance_sensor/cm8jl65/cm8jl65_parser.cpp
index 6986d026bf..d7205210d7 100644
--- a/src/drivers/distance_sensor/cm8jl65/cm8jl65_parser.cpp
+++ b/src/drivers/distance_sensor/cm8jl65/cm8jl65_parser.cpp
@@ -105,6 +105,7 @@ static const unsigned char crc_lsb_vector[] = {
 
 unsigned short crc16_calc(unsigned char *data_frame, uint8_t crc16_length)
 {
+	// compute CRC16 IBM 8005
 	unsigned char crc_high_byte = 0xFF;
 	unsigned char crc_low_byte = 0xFF;
 	int i;