diff --git a/libc/bionic/pthread_join.cpp b/libc/bionic/pthread_join.cpp
index 8e4ca59..e230fab 100644
--- a/libc/bionic/pthread_join.cpp
+++ b/libc/bionic/pthread_join.cpp
@@ -40,7 +40,7 @@
     return EDEADLK;
   }
 
-  pthread_internal_t* thread = __pthread_internal_find(t);
+  pthread_internal_t* thread = __pthread_internal_find(t, "pthread_join");
   if (thread == nullptr) {
     return ESRCH;
   }