diff --git a/lib/include/srsran/interfaces/ue_nr_interfaces.h b/lib/include/srsran/interfaces/ue_nr_interfaces.h
index fa86613f4..974ddd0bf 100644
--- a/lib/include/srsran/interfaces/ue_nr_interfaces.h
+++ b/lib/include/srsran/interfaces/ue_nr_interfaces.h
@@ -123,13 +123,13 @@ public:
 };
 
 struct phy_args_nr_t {
-  uint32_t               nof_carriers;
-  uint32_t               nof_prb;
-  uint32_t               nof_phy_threads;
-  uint32_t               worker_cpu_mask;
-  srsran::phy_log_args_t log;
-  srsran_ue_dl_nr_args_t dl;
-  srsran_ue_ul_nr_args_t ul;
+  uint32_t               nof_carriers     = 1;
+  uint32_t               nof_prb          = 52;
+  uint32_t               nof_phy_threads  = 3;
+  uint32_t               worker_cpu_mask  = 0;
+  srsran::phy_log_args_t log              = {};
+  srsran_ue_dl_nr_args_t dl               = {};
+  srsran_ue_ul_nr_args_t ul               = {};
   std::set<uint32_t>     fixed_sr         = {1};
   uint32_t               fix_wideband_cqi = 15; // Set to a non-zero value for fixing the wide-band CQI report