diff --git a/lib/src/phy/common/phy_logger.c b/lib/src/phy/common/phy_logger.c
index 09393236a..5a44e1a58 100644
--- a/lib/src/phy/common/phy_logger.c
+++ b/lib/src/phy/common/phy_logger.c
@@ -46,16 +46,13 @@ void srslte_phy_log_register_handler(void *ctx, phy_log_handler_t handler) {
 }
 
  void srslte_phy_log_print(phy_logger_level_t log_level, const char *format, ...) {
+  char tmp[256];
   va_list   args;
   va_start(args, format);
   if (phy_log_handler) {
-    char *args_msg = NULL;
-    if(vasprintf(&args_msg, format, args) > 0) {
-      phy_log_handler(log_level, callback_ctx, args_msg);
+    if(vsnprintf(tmp, 256, format, args) > 0) {
+      phy_log_handler(log_level, callback_ctx, tmp);
     }
-    if (args_msg) {
-      free(args_msg); 
-    }
-  } 
+  }
   va_end(args);
 }
\ No newline at end of file
diff --git a/srsue/src/phy/phch_recv.cc b/srsue/src/phy/phch_recv.cc
index 7e41c6836..8ab51d90c 100644
--- a/srsue/src/phy/phch_recv.cc
+++ b/srsue/src/phy/phch_recv.cc
@@ -379,7 +379,9 @@ void phch_recv::run_thread()
   {
     Debug("SYNC:  state=%s\n", phy_state.to_string());
 
-    log_phy_lib_h->step(tti);
+    if (log_phy_lib_h) {
+      log_phy_lib_h->step(tti);
+    }
 
     sf_idx = tti%10;
 
diff --git a/srsue/src/phy/phch_worker.cc b/srsue/src/phy/phch_worker.cc
index f44f4f9a0..7f83ac731 100644
--- a/srsue/src/phy/phch_worker.cc
+++ b/srsue/src/phy/phch_worker.cc
@@ -192,7 +192,9 @@ void phch_worker::set_tti(uint32_t tti_, uint32_t tx_tti_)
   tti    = tti_; 
   tx_tti = tx_tti_;
   log_h->step(tti);
-  log_phy_lib_h->step(tti);
+  if (log_phy_lib_h) {
+    log_phy_lib_h->step(tti);
+  }
 }
 
 void phch_worker::set_prach(cf_t *prach_ptr, float prach_power) {
diff --git a/srsue/src/phy/phy.cc b/srsue/src/phy/phy.cc
index 508dd5dfb..3e2454f12 100644
--- a/srsue/src/phy/phy.cc
+++ b/srsue/src/phy/phy.cc
@@ -143,9 +143,13 @@ bool phy::init(srslte::radio_multi* radio_handler, mac_interface_phy *mac, rrc_i
     nof_coworkers = SRSLTE_MIN(nof_workers - MAX_WORKERS, MAX_WORKERS);
     nof_workers = MAX_WORKERS;
   }
-  this->log_phy_lib_h = (srslte::log*) log_vec[nof_workers];
-  srslte_phy_log_register_handler(this, srslte_phy_handler);
-  
+  if (log_vec[nof_workers]) {
+    this->log_phy_lib_h = (srslte::log*) log_vec[nof_workers];
+    srslte_phy_log_register_handler(this, srslte_phy_handler);
+  } else {
+    this->log_phy_lib_h = NULL;
+  }
+
   initiated = false;
   start();
   return true;
diff --git a/srsue/src/ue.cc b/srsue/src/ue.cc
index ae06eae26..e9078a1cd 100644
--- a/srsue/src/ue.cc
+++ b/srsue/src/ue.cc
@@ -45,7 +45,9 @@ ue::ue()
 ue::~ue()
 {
   for (uint32_t i = 0; i < phy_log.size(); i++) {
-    delete(phy_log[i]);
+    if (phy_log[i]) {
+      delete(phy_log[i]);
+    }
   }
   if (usim) {
     delete usim;
@@ -95,13 +97,17 @@ bool ue::init(all_args_t *args_) {
   }
   
   /* here we add a log layer to handle logging from the phy library*/
-  srslte::log_filter *lib_log = new srslte::log_filter;
-  char tmp[16];
-  sprintf(tmp, "PHY_LIB");
-  lib_log->init(tmp, logger, true);
-  phy_log.push_back(lib_log);
-  ((srslte::log_filter*) phy_log[nof_phy_threads])->set_level(level(args->log.phy_lib_level));
- 
+  if (level(args->log.phy_lib_level) != LOG_LEVEL_NONE) {
+    srslte::log_filter *lib_log = new srslte::log_filter;
+    char tmp[16];
+    sprintf(tmp, "PHY_LIB");
+    lib_log->init(tmp, logger, true);
+    phy_log.push_back(lib_log);
+    ((srslte::log_filter*) phy_log[nof_phy_threads])->set_level(level(args->log.phy_lib_level));
+  } else {
+    phy_log.push_back(NULL);
+  }
+
   
   mac_log.set_level(level(args->log.mac_level));
   rlc_log.set_level(level(args->log.rlc_level));
@@ -112,7 +118,9 @@ bool ue::init(all_args_t *args_) {
   usim_log.set_level(level(args->log.usim_level));
 
   for (int i=0;i<nof_phy_threads + 1;i++) {
-    ((srslte::log_filter*) phy_log[i])->set_hex_limit(args->log.phy_hex_limit);
+    if (phy_log[i]) {
+      ((srslte::log_filter*) phy_log[i])->set_hex_limit(args->log.phy_hex_limit);
+    }
   }
   mac_log.set_hex_limit(args->log.mac_hex_limit);
   rlc_log.set_hex_limit(args->log.rlc_hex_limit);