diff --git a/src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp b/src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp
index a1f17ff64ead6..7581e8dae5930 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp
@@ -48,8 +48,8 @@
 
 ShenandoahControlThread::ShenandoahControlThread() :
   ConcurrentGCThread(),
-  _alloc_failure_waiters_lock(Mutex::safepoint-1, "ShenandoahAllocFailureGC_lock", true),
-  _gc_waiters_lock(Mutex::safepoint-1, "ShenandoahRequestedGC_lock", true),
+  _alloc_failure_waiters_lock(Mutex::safepoint-2, "ShenandoahAllocFailureGC_lock", true),
+  _gc_waiters_lock(Mutex::safepoint-2, "ShenandoahRequestedGC_lock", true),
   _periodic_task(this),
   _requested_gc_cause(GCCause::_no_cause_specified),
   _degen_point(ShenandoahGC::_degenerated_outside_cycle),