diff --git a/libc/bionic/pthread_internal.h b/libc/bionic/pthread_internal.h
index d5d62a7..f96e9d2 100644
--- a/libc/bionic/pthread_internal.h
+++ b/libc/bionic/pthread_internal.h
@@ -52,6 +52,8 @@
   THREAD_DETACHED
 };
 
+struct thread_local_dtor;
+
 struct pthread_internal_t {
   struct pthread_internal_t* next;
   struct pthread_internal_t* prev;
@@ -94,6 +96,8 @@
 
   size_t mmap_size;
 
+  thread_local_dtor* thread_local_dtors;
+
   void* tls[BIONIC_TLS_SLOTS];
 
   pthread_key_data_t key_data[BIONIC_PTHREAD_KEY_COUNT];