diff --git a/libc/bionic/pthread_exit.cpp b/libc/bionic/pthread_exit.cpp
index ab1fb56..3401ed7 100644
--- a/libc/bionic/pthread_exit.cpp
+++ b/libc/bionic/pthread_exit.cpp
@@ -104,6 +104,9 @@
     // because we'll have freed the memory before the thread actually exits.
     __set_tid_address(NULL);
 
+    // pthread_internal_t is freed below with stack, not here.
+    __pthread_internal_remove(thread);
+
     if (thread->mmap_size != 0) {
       // We need to free mapped space for detached threads when they exit.
       // That's not something we can do in C.