diff --git a/libc/bionic/fork.c b/libc/bionic/fork.c
index 2d5a10a..0eedb01 100644
--- a/libc/bionic/fork.c
+++ b/libc/bionic/fork.c
@@ -27,7 +27,6 @@
  */
 #include <unistd.h>
 #include "pthread_internal.h"
-#include "bionic_pthread.h"
 #include "cpuacct.h"
 
 extern int  __fork(void);
@@ -49,9 +48,6 @@
         __timer_table_start_stop(0);
         __bionic_atfork_run_parent();
     } else {
-        /* Adjusting the kernel id after a fork */
-        (void)__pthread_settid(pthread_self(), gettid());
-
         /*
          * Newly created process must update cpu accounting.
          * Call cpuacct_add passing in our uid, which will take
diff --git a/libc/bionic/pthread.c b/libc/bionic/pthread.c
index fdfe508..d9ca432 100644
--- a/libc/bionic/pthread.c
+++ b/libc/bionic/pthread.c
@@ -2292,14 +2292,3 @@
     pthread_internal_t* thread = (pthread_internal_t*)thid;
     return thread->kernel_id;
 }
-
-int __pthread_settid(pthread_t thid, pid_t tid)
-{
-    if (thid == 0)
-        return EINVAL;
-
-    pthread_internal_t* thread = (pthread_internal_t*)thid;
-    thread->kernel_id = tid;
-
-    return 0;
-}
diff --git a/libc/private/bionic_pthread.h b/libc/private/bionic_pthread.h
index 28d6ad8..07bcbd4 100644
--- a/libc/private/bionic_pthread.h
+++ b/libc/private/bionic_pthread.h
@@ -35,7 +35,6 @@
 
 /* Internal, not an NDK API */
 extern pid_t __pthread_gettid(pthread_t thid);
-extern int __pthread_settid(pthread_t thid, pid_t tid);
 
 __END_DECLS