diff --git a/lib/include/srsran/rlc/rlc_am_data_structs.h b/lib/include/srsran/rlc/rlc_am_data_structs.h
index a8515237a..35107383d 100644
--- a/lib/include/srsran/rlc/rlc_am_data_structs.h
+++ b/lib/include/srsran/rlc/rlc_am_data_structs.h
@@ -117,8 +117,8 @@ public:
 
   const uint32_t       rlc_sn     = invalid_rlc_sn;
   uint32_t             retx_count = 0;
-  HeaderType           header;
-  unique_byte_buffer_t buf;
+  HeaderType           header     = {};
+  unique_byte_buffer_t buf        = nullptr;
 
   explicit rlc_amd_tx_pdu(uint32_t rlc_sn_) : rlc_sn(rlc_sn_) {}
   rlc_amd_tx_pdu(const rlc_amd_tx_pdu&)           = delete;
diff --git a/lib/include/srsran/rlc/rlc_am_nr_packing.h b/lib/include/srsran/rlc/rlc_am_nr_packing.h
index 00e6894b5..cb6b9343e 100644
--- a/lib/include/srsran/rlc/rlc_am_nr_packing.h
+++ b/lib/include/srsran/rlc/rlc_am_nr_packing.h
@@ -28,12 +28,12 @@ struct rlc_am_nr_pdu_header_t {
 
   rlc_am_nr_pdu_header_t& operator=(rlc_am_nr_pdu_header_t&& h) = default;
 
-  rlc_dc_field_t      dc;      ///< Data/Control (D/C) field
-  uint8_t             p;       ///< Polling bit
-  rlc_nr_si_field_t   si;      ///< Segmentation info
-  rlc_am_nr_sn_size_t sn_size; ///< Sequence number size (12 or 18 bits)
-  uint32_t            sn;      ///< Sequence number
-  uint16_t            so;      ///< Sequence offset
+  rlc_dc_field_t      dc      = {}; ///< Data/Control (D/C) field
+  uint8_t             p       = {}; ///< Polling bit
+  rlc_nr_si_field_t   si      = {}; ///< Segmentation info
+  rlc_am_nr_sn_size_t sn_size = {}; ///< Sequence number size (12 or 18 bits)
+  uint32_t            sn      = {}; ///< Sequence number
+  uint16_t            so      = {}; ///< Sequence offset
 };
 
 struct rlc_amd_pdu_nr_t {
@@ -42,9 +42,9 @@ struct rlc_amd_pdu_nr_t {
 };
 
 struct rlc_amd_rx_pdu_nr {
-  rlc_am_nr_pdu_header_t header{};
-  unique_byte_buffer_t   buf;
-  uint32_t               rlc_sn{};
+  rlc_am_nr_pdu_header_t header = {};
+  unique_byte_buffer_t   buf    = nullptr;
+  uint32_t               rlc_sn = {};
 
   rlc_amd_rx_pdu_nr() = default;
   explicit rlc_amd_rx_pdu_nr(uint32_t rlc_sn_) : rlc_sn(rlc_sn_) {}