diff --git a/firmware/target/arm/rk27xx/adc-rk27xx.c b/firmware/target/arm/rk27xx/adc-rk27xx.c
index 524cf4d166..3a2f7970c1 100644
--- a/firmware/target/arm/rk27xx/adc-rk27xx.c
+++ b/firmware/target/arm/rk27xx/adc-rk27xx.c
@@ -26,7 +26,7 @@
 #include "thread.h"
 #include "adc.h"
 
-unsigned int adc_scan(int channel)
+unsigned short adc_read(int channel)
 {
     ADC_CTRL = (1<<4)|(1<<3) | (channel & (NUM_ADC_CHANNELS - 1));