diff --git a/fw/Core/Src/main.c b/fw/Core/Src/main.c
index 954bb66..030cfc0 100644
--- a/fw/Core/Src/main.c
+++ b/fw/Core/Src/main.c
@@ -289,7 +289,7 @@ int main(void)
 	  sps30_is_connected = 1;
   }
 
-  if (sgp40_measure_raw_signal(voc_ticks) == SGP40_OK)
+  if (sgp40_measure_raw_signal(&voc_ticks) == SGP40_OK)
   {
 	  sgp40_is_connected = 1;
 	  GasIndexAlgorithm_init(&voc_params, GasIndexAlgorithm_ALGORITHM_TYPE_VOC);
@@ -384,7 +384,7 @@ int main(void)
 			  sgp40_measure_raw_signal_compensated(&voc_ticks_compensated, RH_SHT4x, T_SHT4x);
 //			  sgp40_measure_raw_signal(&voc_ticks);
 			  /* Sensirion VOC library */
-			  GasIndexAlgorithm_process(&voc_params, voc_ticks_compensated, &voc_index);
+			  GasIndexAlgorithm_process(&voc_params, voc_ticks_compensated, (int32_t*)&voc_index);
 
 		  }