diff --git a/libc/bionic/pthread_internal.h b/libc/bionic/pthread_internal.h
index 63071d9..a17c37d 100644
--- a/libc/bionic/pthread_internal.h
+++ b/libc/bionic/pthread_internal.h
@@ -55,8 +55,7 @@
     char dlerror_buffer[__BIONIC_DLERROR_BUFFER_SIZE];
 } pthread_internal_t;
 
-int _init_thread(pthread_internal_t* thread, pid_t kernel_id, const pthread_attr_t* attr,
-                 void* stack_base, bool add_to_thread_list);
+int _init_thread(pthread_internal_t* thread, pid_t kernel_id, bool add_to_thread_list);
 void _pthread_internal_add( pthread_internal_t*  thread );
 pthread_internal_t* __get_thread(void);
 
@@ -65,7 +64,6 @@
 #define PTHREAD_ATTR_FLAG_DETACHED      0x00000001
 #define PTHREAD_ATTR_FLAG_USER_STACK    0x00000002
 
-extern __LIBC_HIDDEN__ const pthread_attr_t gDefaultPthreadAttr;
 extern pthread_internal_t* gThreadList;
 extern pthread_mutex_t gThreadListLock;