diff --git a/libc/bionic/pthread_detach.cpp b/libc/bionic/pthread_detach.cpp
index a8608e3..715acf1 100644
--- a/libc/bionic/pthread_detach.cpp
+++ b/libc/bionic/pthread_detach.cpp
@@ -46,7 +46,7 @@
 
   if (thread->tid == 0) {
     // Already exited; clean up.
-    _pthread_internal_remove_locked(thread.get());
+    _pthread_internal_remove_locked(thread.get(), true);
     return 0;
   }