diff --git a/lib/rules/avoid-leaking-state-in-ember-objects.js b/lib/rules/avoid-leaking-state-in-ember-objects.js
index 3069286991..471f45000a 100644
--- a/lib/rules/avoid-leaking-state-in-ember-objects.js
+++ b/lib/rules/avoid-leaking-state-in-ember-objects.js
@@ -37,7 +37,9 @@ function isAllowed(value) {
     ember.isFunctionExpression(value) ||
     types.isLiteral(value) ||
     types.isIdentifier(value) ||
-    types.isCallExpression(value) ||
+    // NOTE: CallExpression intentionally removed — myProp: A() or
+    // myProp: EmberObject.create() creates a shared instance across all
+    // object instances, leaking state. See issue #300.
     types.isBinaryExpression(value) ||
     types.isTemplateLiteral(value) ||
     types.isTaggedTemplateExpression(value) ||