diff --git a/src/machine.cpp b/src/machine.cpp
index c45469014f..637ba954a9 100644
--- a/src/machine.cpp
+++ b/src/machine.cpp
@@ -257,12 +257,12 @@ postVisit(Thread* t, Heap::Visitor* v)
 
   if (lastNewTenuredFinalizer) {
     finalizerNext(t, lastNewTenuredFinalizer) = m->tenuredFinalizers;
-    m->tenuredFinalizers = lastNewTenuredFinalizer;
+    m->tenuredFinalizers = firstNewTenuredFinalizer;
   }
 
   if (lastNewTenuredWeakReference) {
     jreferenceNext(t, lastNewTenuredWeakReference) = m->tenuredWeakReferences;
-    m->tenuredWeakReferences = lastNewTenuredWeakReference;
+    m->tenuredWeakReferences = firstNewTenuredWeakReference;
   }
 }
 
diff --git a/src/machine.h b/src/machine.h
index 1c397a0a5a..479d6bcbcb 100644
--- a/src/machine.h
+++ b/src/machine.h
@@ -24,7 +24,7 @@ namespace vm {
 const bool Verbose = false;
 const bool DebugRun = false;
 const bool DebugStack = false;
-const bool DebugMonitors = true;
+const bool DebugMonitors = false;
 
 const uintptr_t HashTakenMark = 1;
 const uintptr_t ExtendedMark = 2;