diff --git a/nsprpub/pr/src/threads/combined/pruthr.c b/nsprpub/pr/src/threads/combined/pruthr.c
index 77236df168c0..1329bb6643de 100644
--- a/nsprpub/pr/src/threads/combined/pruthr.c
+++ b/nsprpub/pr/src/threads/combined/pruthr.c
@@ -85,7 +85,6 @@ PRThread *suspendAllThread = NULL;
 
 extern PRCList _pr_active_global_threadQ;
 extern PRCList _pr_active_local_threadQ;
-extern _PRCPU  *_pr_primordialCPU;
 
 static void _PR_DecrActiveThreadCount(PRThread *thread);
 static PRThread *_PR_AttachThread(PRThreadType, PRThreadPriority, PRThreadStack *);