diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index 839271c01c5..91a8fb8b096 100644
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -1618,8 +1618,6 @@ thread_db_target::update_thread_list ()
 {
   struct thread_db_info *info;
 
-  prune_threads ();
-
   for (inferior *inf : all_inferiors ())
     {
       if (inf->pid == 0)