diff --git a/lib/Parser/Parse.cpp b/lib/Parser/Parse.cpp
index 57cacaeab35..ad76de6a752 100644
--- a/lib/Parser/Parse.cpp
+++ b/lib/Parser/Parse.cpp
@@ -13995,6 +13995,7 @@ void Parser::ReleaseTemporaryGuestArena()
         if (this->m_scriptContext != nullptr)
         {
             this->m_scriptContext->ReleaseTemporaryGuestAllocator(m_tempGuestArena);
+            m_tempGuestArena.Unroot();
         }
 
         m_tempGuestArenaReleased = true;
diff --git a/lib/Runtime/Base/ScriptContext.h b/lib/Runtime/Base/ScriptContext.h
index 122a2ae1820..0860ba0d7a9 100644
--- a/lib/Runtime/Base/ScriptContext.h
+++ b/lib/Runtime/Base/ScriptContext.h
@@ -2034,16 +2034,10 @@ namespace Js
     ArenaAllocator * allocator = nullptr;
 
 #define ACQUIRE_TEMP_GUEST_ALLOCATOR(allocator, scriptContext, name) \
-    TryFinally([&]() \
-    { \
-        tempGuest##allocator = scriptContext->GetTemporaryGuestAllocator(name); \
-        allocator = tempGuest##allocator->GetAllocator();
+    tempGuest##allocator = scriptContext->GetTemporaryGuestAllocator(name); \
+    allocator = tempGuest##allocator->GetAllocator();
 
 #define RELEASE_TEMP_GUEST_ALLOCATOR(allocator, scriptContext) \
-    }, \
-    [&](bool /*hasException*/) \
-    { \
-        if (tempGuest##allocator) \
-        scriptContext->ReleaseTemporaryGuestAllocator(tempGuest##allocator); \
-    });
+    if (tempGuest##allocator) \
+    scriptContext->ReleaseTemporaryGuestAllocator(tempGuest##allocator);
 
diff --git a/test/Array/rlexe.xml b/test/Array/rlexe.xml
index bb31a119e3f..6981f724a4a 100644
--- a/test/Array/rlexe.xml
+++ b/test/Array/rlexe.xml
@@ -646,6 +646,7 @@
       <files>memset_invariant.js</files>
       <tags>Slow</tags>
       <compile-flags>-mic:1 -off:simplejit -mmoc:0 -off:JITLoopBody</compile-flags>
+      <timeout>300</timeout>
     </default>
   </test>
   <!--