diff --git a/firmware/drivers/adc.c b/firmware/drivers/adc.c
index 2bb5edf3bf..5affe10168 100644
--- a/firmware/drivers/adc.c
+++ b/firmware/drivers/adc.c
@@ -77,7 +77,6 @@ static void adc_batch_convert(bool lower)
 
 void adc_init(void)
 {
-    int i;
     ADCR  = 0x7f; /* No external trigger; other bits should be 1 according to the manual... */
 
     current_channel = 0;