diff --git a/src/hathreads.c b/src/hathreads.c
index 0d690f3..5db3c21 100644
--- a/src/hathreads.c
+++ b/src/hathreads.c
@@ -31,7 +31,7 @@
 static HA_SPINLOCK_T sync_lock;
 static int           threads_sync_pipe[2];
 static unsigned long threads_want_sync = 0;
-static unsigned long all_threads_mask  = 0;
+unsigned long all_threads_mask  = 0;
 
 #if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
 struct lock_stat lock_stats[LOCK_LABELS];