diff --git a/lib/test/asn1/srslte_asn1_rrc_dl_ccch_test.cc b/lib/test/asn1/srslte_asn1_rrc_dl_ccch_test.cc
index 99c1804bb..c2a45b2cc 100644
--- a/lib/test/asn1/srslte_asn1_rrc_dl_ccch_test.cc
+++ b/lib/test/asn1/srslte_asn1_rrc_dl_ccch_test.cc
@@ -47,8 +47,8 @@ int rrc_conn_setup_test1()
   log1.set_level(srslte::LOG_LEVEL_DEBUG);
   log1.set_hex_limit(128);
 
-  uint8_t  rrc_msg[]   = {0x60, 0x12, 0x98, 0x0b, 0xfd, 0xd2, 0x04, 0xfa, 0x18, 0x3e, 0xd5, 0xe6, 0xc2,
-                       0x59, 0x90, 0xc1, 0xa6, 0x00, 0x01, 0x31, 0x40, 0x42, 0x50, 0x80, 0x00, 0xf8};
+  uint8_t  rrc_msg[] = {0x60, 0x12, 0x98, 0x0b, 0xfd, 0xd2, 0x04, 0xfa, 0x18, 0x3e, 0xd5, 0xe6, 0xc2,
+                        0x59, 0x90, 0xc1, 0xa6, 0x00, 0x01, 0x31, 0x40, 0x42, 0x50, 0x80, 0x00, 0xf8};
   uint32_t rrc_msg_len = sizeof(rrc_msg);
   // 6012980bfdd204fa183ed5e6c25990c1a60001314042508000f8
 
@@ -83,6 +83,7 @@ int rrc_conn_setup_test1()
 
   // test repacking
   uint8_t rrc_msg2[rrc_msg_len];
+  bzero(rrc_msg2, sizeof(rrc_msg2));
   bit_ref bref2(&rrc_msg2[0], sizeof(rrc_msg2));
   if (dl_ccch_msg.pack(bref2) != SRSASN_SUCCESS) {
     return -1;
@@ -110,6 +111,7 @@ int rrc_reestablishment_reject_test()
 
   // test repacking
   uint8_t rrc_msg[32];
+  bzero(rrc_msg, sizeof(rrc_msg));
   bit_ref bref(rrc_msg, sizeof(rrc_msg));
   if (dl_ccch_msg.pack(bref) != SRSASN_SUCCESS) {
     return -1;
diff --git a/lib/test/asn1/srslte_asn1_rrc_mcch_test.cc b/lib/test/asn1/srslte_asn1_rrc_mcch_test.cc
index 6c35386c8..8af37b184 100644
--- a/lib/test/asn1/srslte_asn1_rrc_mcch_test.cc
+++ b/lib/test/asn1/srslte_asn1_rrc_mcch_test.cc
@@ -123,6 +123,7 @@ int basic_test()
   //log1.info_hex(byte_buf.msg, byte_buf.N_bytes, "MCCH packed message:");
 
   uint8_t       rrc_msg2[known_reference_len];
+  bzero(rrc_msg2, sizeof(rrc_msg2));
   asn1::bit_ref bref2(&rrc_msg2[0], sizeof(rrc_msg2));
   mcch_msg.pack(bref2);
   TESTASSERT(bref.distance(bref0) == bref2.distance(&rrc_msg2[0]));
diff --git a/lib/test/asn1/srslte_asn1_rrc_meas_test.cc b/lib/test/asn1/srslte_asn1_rrc_meas_test.cc
index f91a1d68e..018a4af02 100644
--- a/lib/test/asn1/srslte_asn1_rrc_meas_test.cc
+++ b/lib/test/asn1/srslte_asn1_rrc_meas_test.cc
@@ -93,6 +93,7 @@ int basic_test()
   TESTASSERT(meas_list[0].meas_result.rsrq_result == 18);
 
   uint8_t rrc_msg2[rrc_msg_len];
+  bzero(rrc_msg2, rrc_msg_len);
   bit_ref bref2(&rrc_msg2[0], sizeof(rrc_msg2));
   ul_dcch_msg.pack(bref2);
   TESTASSERT(bref.distance(bref0) == bref2.distance(&rrc_msg2[0]));
diff --git a/lib/test/asn1/srslte_asn1_rrc_ul_dcch_test.cc b/lib/test/asn1/srslte_asn1_rrc_ul_dcch_test.cc
index 1c46a981b..4742cad2c 100644
--- a/lib/test/asn1/srslte_asn1_rrc_ul_dcch_test.cc
+++ b/lib/test/asn1/srslte_asn1_rrc_ul_dcch_test.cc
@@ -33,6 +33,8 @@
 
 using namespace asn1::rrc;
 
+#define PCAP 0
+
 #define TESTASSERT(cond)                                                                                               \
   {                                                                                                                    \
     if (!(cond)) {                                                                                                     \
@@ -41,7 +43,7 @@ using namespace asn1::rrc;
     }                                                                                                                  \
   }
 
-int rrc_ue_cap_info_test(srslte::mac_pcap& pcap)
+int rrc_ue_cap_info_test(srslte::mac_pcap* pcap)
 {
   srslte::log_filter log1("RRC");
   log1.set_level(srslte::LOG_LEVEL_DEBUG);
@@ -85,17 +87,19 @@ int rrc_ue_cap_info_test(srslte::mac_pcap& pcap)
   cap.feature_group_inds.from_number(args.feature_group);
 
   uint8_t       buf[64];
+  bzero(buf, sizeof(buf));
   asn1::bit_ref bref(buf, sizeof(buf));
   cap.pack(bref);
   bref.align_bytes_zero();
   uint32_t cap_len = (uint32_t)bref.distance_bytes(buf);
+
   info->ue_cap_rat_container_list[0].ue_cap_rat_container.resize(cap_len);
   memcpy(info->ue_cap_rat_container_list[0].ue_cap_rat_container.data(), buf, cap_len);
   log1.debug_hex(buf, cap_len, "UE-Cap (%d/%zd B)\n", cap_len, sizeof(buf));
 
   // pack the message
-  uint8_t byte_buf[16];
-  ZERO_OBJECT(byte_buf);
+  uint8_t byte_buf[32];
+  bzero(byte_buf, sizeof(byte_buf));
   asn1::bit_ref bref3(byte_buf, sizeof(byte_buf));
   ul_dcch_msg.pack(bref3);
   bref3.align_bytes_zero();
@@ -103,7 +107,9 @@ int rrc_ue_cap_info_test(srslte::mac_pcap& pcap)
   uint32_t len = (uint32_t)bref3.distance_bytes(byte_buf);
   log1.debug_hex(byte_buf, len, "UL-DCCH (%d/%zd B)\n", len, sizeof(byte_buf));
 
-  pcap.write_ul_rrc_pdu(byte_buf, len);
+  if (pcap != NULL) {
+    pcap->write_ul_rrc_pdu(byte_buf, len);
+  }
 
   return 0;
 }
@@ -163,12 +169,17 @@ int pack_fail_test()
 
 int main(int argc, char** argv)
 {
+#if PCAP
   srslte::mac_pcap pcap;
   pcap.open("ul_dcch.pcap");
-
-  TESTASSERT(rrc_ue_cap_info_test(pcap) == 0);
+  TESTASSERT(rrc_ue_cap_info_test(&pcap) == 0);
+#else
+  TESTASSERT(rrc_ue_cap_info_test(NULL) == 0);
+#endif
   TESTASSERT(pack_fail_test() == -1);
 
+#if PCAP
   pcap.close();
+#endif
   return 0;
 }
\ No newline at end of file
diff --git a/srsue/test/upper/rrc_reconfig_test.cc b/srsue/test/upper/rrc_reconfig_test.cc
index ffb3f56da..a89a33030 100644
--- a/srsue/test/upper/rrc_reconfig_test.cc
+++ b/srsue/test/upper/rrc_reconfig_test.cc
@@ -144,6 +144,7 @@ int basic_test()
   TESTASSERT(reconf_r8->rr_cfg_ded.phys_cfg_ded.pusch_cfg_ded_present);
 
   uint8_t rrc_msg2[rrc_msg_len];
+  bzero(rrc_msg2, sizeof(rrc_msg2));
   bit_ref bref2(&rrc_msg2[0], rrc_msg_len);
   dl_dcch_msg.pack(bref2);