diff --git a/firmware/slider/adc.c b/firmware/slider/adc.c
index 2b22eec..96db70c 100644
--- a/firmware/slider/adc.c
+++ b/firmware/slider/adc.c
@@ -20,5 +20,5 @@ void adc_init(uint8_t * channels) {
 //	adc.channel_map = channels;
 
 	ADMUX = channels[0];
-	ADCSRA = /*(1<<ADATE) | */ (1<<ADEN); // enable adc, maximum prescaler value
+	ADCSRA = /*(1<<ADATE) | */ (1<<ADEN) | 2; // enable adc, maximum prescaler value
 }
diff --git a/firmware/slider/main.c b/firmware/slider/main.c
index 3315c62..8e686b3 100644
--- a/firmware/slider/main.c
+++ b/firmware/slider/main.c
@@ -58,7 +58,7 @@ volatile enum {
 static inline void comm_service()
 {
 	static uint8_t count = 0;
-	static uint16_t temp = 0xFF;
+	static uint16_t temp = 0xFFFF;
 
 	if (USISR & (1<<USIOIF))
 	{