diff --git a/include/nuttx/tls.h b/include/nuttx/tls.h
index e8af699b38c..e7b673aed5f 100644
--- a/include/nuttx/tls.h
+++ b/include/nuttx/tls.h
@@ -232,9 +232,6 @@ struct tls_info_s
 #if !defined(CONFIG_DISABLE_PTHREAD) && !defined(CONFIG_PTHREAD_MUTEX_UNSAFE)
   FAR struct pthread_mutex_s *tl_mhead;   /* List of mutexes held by thread  */
 #endif
-#ifndef CONFIG_PTHREAD_MUTEX_UNSAFE
-  mutex_t tl_lock;
-#endif
 };
 
 /****************************************************************************
diff --git a/libs/libc/pthread/pthread_mutex.c b/libs/libc/pthread/pthread_mutex.c
index 1d65d545916..d1b9a232d0b 100644
--- a/libs/libc/pthread/pthread_mutex.c
+++ b/libs/libc/pthread/pthread_mutex.c
@@ -66,10 +66,8 @@ static void pthread_mutex_add(FAR struct pthread_mutex_s *mutex)
 
   /* Add the mutex to the list of mutexes held by this pthread */
 
-  nxmutex_lock(&tls->tl_lock);
   mutex->flink = tls->tl_mhead;
   tls->tl_mhead = mutex;
-  nxmutex_unlock(&tls->tl_lock);
 }
 
 /****************************************************************************
@@ -92,8 +90,6 @@ static void pthread_mutex_remove(FAR struct pthread_mutex_s *mutex)
   FAR struct pthread_mutex_s *curr;
   FAR struct pthread_mutex_s *prev;
 
-  nxmutex_lock(&tls->tl_lock);
-
   /* Remove the mutex from the list of mutexes held by this task */
 
   for (prev = NULL, curr = tls->tl_mhead;
@@ -118,7 +114,6 @@ static void pthread_mutex_remove(FAR struct pthread_mutex_s *mutex)
     }
 
   mutex->flink = NULL;
-  nxmutex_unlock(&tls->tl_lock);
 }
 
 /****************************************************************************
diff --git a/libs/libc/pthread/pthread_mutex_inconsistent.c b/libs/libc/pthread/pthread_mutex_inconsistent.c
index e310c5e35ab..d35a1914800 100644
--- a/libs/libc/pthread/pthread_mutex_inconsistent.c
+++ b/libs/libc/pthread/pthread_mutex_inconsistent.c
@@ -64,8 +64,6 @@ void pthread_mutex_inconsistent(FAR struct tls_info_s *tls)
 {
   FAR struct pthread_mutex_s *mutex;
 
-  nxmutex_lock(&tls->tl_lock);
-
   /* Remove and process each mutex held by this task */
 
   while (tls->tl_mhead != NULL)
@@ -81,6 +79,4 @@ void pthread_mutex_inconsistent(FAR struct tls_info_s *tls)
       mutex->flags |= _PTHREAD_MFLAGS_INCONSISTENT;
       mutex_reset(&mutex->mutex);
     }
-
-  nxmutex_unlock(&tls->tl_lock);
 }
diff --git a/sched/sched/sched_releasetcb.c b/sched/sched/sched_releasetcb.c
index 7d2b51816a7..96b3e736e79 100644
--- a/sched/sched/sched_releasetcb.c
+++ b/sched/sched/sched_releasetcb.c
@@ -118,10 +118,6 @@ int nxsched_release_tcb(FAR struct tcb_s *tcb, uint8_t ttype)
       timer_deleteall(tcb->pid);
 #endif
 
-#ifndef CONFIG_PTHREAD_MUTEX_UNSAFE
-      nxmutex_destroy(&nxsched_get_tls(tcb)->tl_lock);
-#endif
-
       /* Release the task's process ID if one was assigned.  PID
        * zero is reserved for the IDLE task.  The TCB of the IDLE
        * task is never release so a value of zero simply means that
diff --git a/sched/tls/tls_dupinfo.c b/sched/tls/tls_dupinfo.c
index c1c5fe8776b..5ee29d93de9 100644
--- a/sched/tls/tls_dupinfo.c
+++ b/sched/tls/tls_dupinfo.c
@@ -81,9 +81,5 @@ int tls_dup_info(FAR struct tcb_s *dst, FAR struct tcb_s *src)
 
   info->tl_tid = dst->pid;
 
-#ifndef CONFIG_PTHREAD_MUTEX_UNSAFE
-  nxmutex_init(&info->tl_lock);
-#endif
-
   return OK;
 }
diff --git a/sched/tls/tls_initinfo.c b/sched/tls/tls_initinfo.c
index 99ff59ad67e..c38704a19cf 100644
--- a/sched/tls/tls_initinfo.c
+++ b/sched/tls/tls_initinfo.c
@@ -84,9 +84,5 @@ int tls_init_info(FAR struct tcb_s *tcb)
 
   info->tl_argv = NULL;
 
-#ifndef CONFIG_PTHREAD_MUTEX_UNSAFE
-  nxmutex_init(&info->tl_lock);
-#endif
-
   return OK;
 }