diff --git a/openair1/SIMULATION/NR_PHY/dlschsim.c b/openair1/SIMULATION/NR_PHY/dlschsim.c
index c98bc4ee04..cbc1b7a36d 100644
--- a/openair1/SIMULATION/NR_PHY/dlschsim.c
+++ b/openair1/SIMULATION/NR_PHY/dlschsim.c
@@ -412,7 +412,7 @@ int main(int argc, char **argv)
 	}
 
 	//configure UE
-	UE = malloc(sizeof(PHY_VARS_NR_UE));
+	UE = calloc(1, sizeof(*UE));
 	memcpy(&UE->frame_parms, frame_parms, sizeof(NR_DL_FRAME_PARMS));
 
 	//phy_init_nr_top(frame_parms);
diff --git a/openair1/SIMULATION/NR_PHY/pucchsim.c b/openair1/SIMULATION/NR_PHY/pucchsim.c
index 3ced917cac..d600c480d2 100644
--- a/openair1/SIMULATION/NR_PHY/pucchsim.c
+++ b/openair1/SIMULATION/NR_PHY/pucchsim.c
@@ -123,7 +123,7 @@ int main(int argc, char **argv)
   int16_t amp=0x7FFF;
   int nr_slot_tx=0;
   int nr_frame_tx=0;
-  uint64_t actual_payload=0,payload_received;
+  uint64_t actual_payload = 0, payload_received = 0;
   bool random_payload = true;
   int nr_bit=1; // maximum value possible is 2
   uint8_t m0=0;// higher layer paramater initial cyclic shift
diff --git a/openair1/SIMULATION/NR_PHY/ulschsim.c b/openair1/SIMULATION/NR_PHY/ulschsim.c
index 4b25863e85..c354ecb7d9 100644
--- a/openair1/SIMULATION/NR_PHY/ulschsim.c
+++ b/openair1/SIMULATION/NR_PHY/ulschsim.c
@@ -428,7 +428,7 @@ int main(int argc, char **argv)
   phy_init_nr_gNB(gNB);
 
   //configure UE
-  UE = malloc(sizeof(PHY_VARS_NR_UE));
+  UE = calloc(1, sizeof(*UE));
   memcpy(&UE->frame_parms, frame_parms, sizeof(NR_DL_FRAME_PARMS));
 
   UE->frame_parms.nb_antennas_tx = n_tx;