diff --git a/hphp/runtime/base/type_array.cpp b/hphp/runtime/base/type_array.cpp
index eed52627e..d8a969f41 100644
--- a/hphp/runtime/base/type_array.cpp
+++ b/hphp/runtime/base/type_array.cpp
@@ -83,15 +83,6 @@ Array &Array::operator =  (Variant&& v) {
   return *this;
 }
 
-HOT_FUNC
-Array &Array::operator=(const StaticArray &arr) {
-  if (m_px != arr.m_px) {
-    if (m_px) decRefArr(m_px);
-    m_px = arr.m_px;
-  }
-  return *this;
-}
-
 Array Array::operator+(ArrayData *data) const {
   return Array(m_px).operator+=(data);
 }
diff --git a/hphp/runtime/base/type_array.h b/hphp/runtime/base/type_array.h
index 0f341a8f4..10d9ddd90 100644
--- a/hphp/runtime/base/type_array.h
+++ b/hphp/runtime/base/type_array.h
@@ -14,14 +14,14 @@
    +----------------------------------------------------------------------+
 */
 
+#ifndef incl_HPHP_ARRAY_H_
+#define incl_HPHP_ARRAY_H_
+
 #ifndef incl_HPHP_INSIDE_HPHP_COMPLEX_TYPES_H_
 #error Directly including 'type_array.h' is prohibited. \
        Include 'complex_types.h' instead.
 #endif
 
-#ifndef incl_HPHP_ARRAY_H_
-#define incl_HPHP_ARRAY_H_
-
 #include <boost/static_assert.hpp>
 
 #include <runtime/base/util/smart_ptr.h>
@@ -39,7 +39,6 @@ inline int64_t ToKey(double d) {
 
 // forward declaration
 class ArrayIter;
-class StaticArray;
 
 /**
  * Array type wrapping around ArrayData to implement reference
@@ -80,8 +79,8 @@ class Array : protected SmartPtr<ArrayData> {
    * array value from the parameter, and they are NOT constructing an array
    * with that single value (then one should use Array::Create() functions).
    */
-  Array(ArrayData *data) : ArrayBase(data) { }
-  Array(CArrRef arr) : ArrayBase(arr.m_px) { }
+  /* implicit */ Array(ArrayData *data) : ArrayBase(data) { }
+  /* implicit */ Array(CArrRef arr) : ArrayBase(arr.m_px) { }
 
   // Move ctor
   Array(Array&& src) : ArrayBase(std::move(src)) {
@@ -125,7 +124,6 @@ class Array : protected SmartPtr<ArrayData> {
   Array &operator =  (ArrayData *data);
   Array &operator =  (CArrRef v);
   Array &operator =  (CVarRef v);
-  Array &operator =  (const StaticArray &v);
   Array  operator +  (ArrayData *data) const;
   Array  operator +  (CArrRef v) const;
   Array  operator +  (CVarRef v) const;
@@ -514,26 +512,6 @@ class Array : protected SmartPtr<ArrayData> {
   }
 };
 
-///////////////////////////////////////////////////////////////////////////////
-
-/**
- * A StaticArray can be co-accessed by multiple threads, therefore they are
- * not thread local, and they have to be allocated BEFORE any thread starts,
- * so that they won't be garbage collected by MemoryManager. This is used by
- * scalar arrays, so they can be pre-allocated before request handling.
- */
-class StaticArray : public Array {
-public:
-  StaticArray() { }
-  StaticArray(ArrayData *data) : Array(data) {
-  }
-  ~StaticArray() {
-    // prevent ~SmartPtr from calling decRefCount after data is released
-    m_px = nullptr;
-  }
-};
-
-
 ///////////////////////////////////////////////////////////////////////////////
 // ArrNR
 
diff --git a/hphp/runtime/base/type_variant.h b/hphp/runtime/base/type_variant.h
index f3af79496..1132d7471 100644
--- a/hphp/runtime/base/type_variant.h
+++ b/hphp/runtime/base/type_variant.h
@@ -129,12 +129,6 @@ class Variant : private TypedValue {
     assert(s);
     m_data.pstr = s;
   }
-  Variant(const StaticArray &v) {
-    m_type = KindOfArray;
-    ArrayData *a = v.get();
-    assert(a);
-    m_data.parr = a;
-  }
 
   Variant(CStrRef v);
   Variant(CArrRef v);
diff --git a/hphp/runtime/vm/translator/hopt/ir.cpp b/hphp/runtime/vm/translator/hopt/ir.cpp
index 8ca0c98d4..a75eae438 100644
--- a/hphp/runtime/vm/translator/hopt/ir.cpp
+++ b/hphp/runtime/vm/translator/hopt/ir.cpp
@@ -1029,7 +1029,7 @@ Variant SSATmp::getValVariant() const {
     return (litstr)m_inst->getExtra<ConstData>()
         ->as<const StringData*>()->data();
   case KindOfArray:
-    return StaticArray(ArrayData::GetScalarArray(m_inst->getExtra<ConstData>()
+    return Array(ArrayData::GetScalarArray(m_inst->getExtra<ConstData>()
       ->as<ArrayData*>()));
   case KindOfObject:
     return m_inst->getExtra<ConstData>()->as<const Object*>();