diff --git a/packages/ember-metal/lib/meta.js b/packages/ember-metal/lib/meta.js
index d9ae04f007b..48fec6604d4 100644
--- a/packages/ember-metal/lib/meta.js
+++ b/packages/ember-metal/lib/meta.js
@@ -509,16 +509,13 @@ if (HAS_NATIVE_WEAKMAP) {
   peekMeta = function WeakMap_peekParentMeta(obj) {
     let pointer = obj;
     let meta;
-    while (pointer !== undefined && pointer !== null) {
+    while (pointer !== undefined && null !== pointer) {
       meta = metaStore.get(pointer);
       // jshint loopfunc:true
       if (DEBUG) {
         counters.peekCalls++;
       }
-      // stop if we find a `null` value, since
-      // that means the meta was deleted
-      // any other truthy value is a "real" meta
-      if (meta === null || meta !== undefined) {
+      if (meta !== undefined) {
         return meta;
       }
 
@@ -530,14 +527,10 @@ if (HAS_NATIVE_WEAKMAP) {
   };
 } else {
   setMeta = function Fallback_setMeta(obj, meta) {
-    // if `null` already, just set it to the new value
-    // otherwise define property first
-    if (obj[META_FIELD] !== null) {
-      if (obj.__defineNonEnumerable) {
-        obj.__defineNonEnumerable(EMBER_META_PROPERTY);
-      } else {
-        Object.defineProperty(obj, META_FIELD, META_DESC);
-      }
+    if (obj.__defineNonEnumerable) {
+      obj.__defineNonEnumerable(EMBER_META_PROPERTY);
+    } else {
+      Object.defineProperty(obj, META_FIELD, META_DESC);
     }
 
     obj[META_FIELD] = meta;
@@ -586,7 +579,7 @@ export function meta(obj) {
   let parent;
 
   // remove this code, in-favor of explicit parent
-  if (maybeMeta !== undefined && maybeMeta !== null) {
+  if (maybeMeta !== undefined) {
     if (maybeMeta.source === obj) {
       return maybeMeta;
     }
diff --git a/packages/ember-runtime/lib/mixins/array.js b/packages/ember-runtime/lib/mixins/array.js
index 55f9690041f..13609685455 100644
--- a/packages/ember-runtime/lib/mixins/array.js
+++ b/packages/ember-runtime/lib/mixins/array.js
@@ -638,7 +638,7 @@ const ArrayMixin = Mixin.create(Enumerable, {
 function EachProxy(content) {
   this._content = content;
   this._keys = undefined;
-  this.__ember_meta__ = null;
+  this.__ember_meta__ = undefined;
 }
 
 EachProxy.prototype = {