diff --git a/libc/bionic/clone.cpp b/libc/bionic/clone.cpp
index d7ce37f..66ec503 100644
--- a/libc/bionic/clone.cpp
+++ b/libc/bionic/clone.cpp
@@ -34,11 +34,15 @@
 
 #include "pthread_internal.h"
 
+#include "private/bionic_macros.h"
+
 extern "C" pid_t __bionic_clone(uint32_t flags, void* child_stack, int* parent_tid, void* tls, int* child_tid, int (*fn)(void*), void* arg);
 extern "C" __noreturn void __exit(int status);
 
 // Called from the __bionic_clone assembler to call the thread function then exit.
 extern "C" __LIBC_HIDDEN__ void __start_thread(int (*fn)(void*), void* arg) {
+  BIONIC_STOP_UNWIND;
+
   pthread_internal_t* self = __get_thread();
   if (self && self->tid == -1) {
     self->tid = syscall(__NR_gettid);