diff --git a/Core/Src/board_logic.c b/Core/Src/board_logic.c
index a5e3d81..3abcff1 100644
--- a/Core/Src/board_logic.c
+++ b/Core/Src/board_logic.c
@@ -150,8 +150,13 @@ uint16_t update_status(void) {
 }
 
 void adc_bufferize(void) {
-  volt_buff[buff_index] = rawADC[0];
-  curr_buff[buff_index] = rawADC[1];
+  if (GET_HVS_CONN) {
+    volt_buff[buff_index] = rawADC[0];
+    curr_buff[buff_index] = rawADC[1];
+  } else {
+    volt_buff[buff_index] = 0;
+    curr_buff[buff_index] = 0;
+  }
   if (++buff_index >= ADC_BUFF_LENGTH) {
     buff_index = 0;
     adc_sum_flag = 1;