diff --git a/eventlet/green/threading.py b/eventlet/green/threading.py
index 106f7d9..b2ce428 100644
--- a/eventlet/green/threading.py
+++ b/eventlet/green/threading.py
@@ -17,7 +17,7 @@ def _patch_main_thread(mod):
     # then the main thread will have the wrong key in therading._active,
     # so, we try and replace that key with the correct one here
     # this works best if there are no other threads besides the main one
-    curthread = mod._active.pop(mod.current_thread()._Thread__ident, None)
+    curthread = mod._active.pop(mod._get_ident(), None)
     if curthread:
         mod._active[thread.get_ident()] = curthread