diff --git a/firmware/drivers/adc.c b/firmware/drivers/adc.c
index f20b8ee448..1865e8c582 100644
--- a/firmware/drivers/adc.c
+++ b/firmware/drivers/adc.c
@@ -102,5 +102,5 @@ void adc_init(void)
     
     tick_add_task(adc_tick);
     
-    sleep(1);    /* Ensure valid readings when adc_init returns */
+    sleep(2);    /* Ensure valid readings when adc_init returns */
 }