diff --git a/src/hotspot/share/runtime/objectMonitor.cpp b/src/hotspot/share/runtime/objectMonitor.cpp
index d281acdf006..2c8ae3c8ed2 100644
--- a/src/hotspot/share/runtime/objectMonitor.cpp
+++ b/src/hotspot/share/runtime/objectMonitor.cpp
@@ -2135,7 +2135,8 @@ PerfLongVariable * ObjectMonitor::_sync_MonExtant              = nullptr;
 void ObjectMonitor::Initialize() {
   assert(!InitDone, "invariant");

-  if (!os::is_MP()) {
+  //if (!os::is_MP()) {
+  if (true) {
     Knob_SpinLimit = 0;
     Knob_PreSpin   = 0;
     Knob_FixedSpin = -1;