diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb
index 62c944fce3e6fd55927eb78786d73144dc1fe1af..edc53e25171d3ca5ffd9573da4ce772b5079dcea 100644
--- a/activerecord/lib/active_record/associations/collection_association.rb
+++ b/activerecord/lib/active_record/associations/collection_association.rb
@@ -30,7 +30,8 @@ def reader
           reload
         end
 
-        CollectionProxy.create(klass, self)
+        @proxy ||= CollectionProxy.create(klass, self)
+        @proxy.reset_scope
       end
 
       # Implements the writer method, e.g. foo.items= for Foo.has_many :items
diff --git a/activerecord/lib/active_record/associations/collection_proxy.rb b/activerecord/lib/active_record/associations/collection_proxy.rb
index 89cfa07be3a422f04965649f64712c4cda58733a..8cdb508c433c7e1c6426cfc225e2e9c24e33dfe5 100644
--- a/activerecord/lib/active_record/associations/collection_proxy.rb
+++ b/activerecord/lib/active_record/associations/collection_proxy.rb
@@ -1087,9 +1087,8 @@ def clear
       #   person.pets(true)  # fetches pets from the database
       #   # => [#<Pet id: 1, name: "Snoop", group: "dogs", person_id: 1>]
       def reload
-        @scope = nil
         proxy_association.reload
-        self
+        reset_scope
       end
 
       # Unloads the association. Returns +self+.
@@ -1109,9 +1108,13 @@ def reload
       #   person.pets  # fetches pets from the database
       #   # => [#<Pet id: 1, name: "Snoop", group: "dogs", person_id: 1>]
       def reset
-        @scope = nil
         proxy_association.reset
         proxy_association.reset_scope
+        reset_scope
+      end
+
+      def reset_scope # :nodoc:
+        @scope = nil
         self
       end
 
diff --git a/activerecord/test/cases/associations_test.rb b/activerecord/test/cases/associations_test.rb
index 4ab690bfc6498fbfa9d2c7700f036883dca88dff..ff31c827941099b108e3af1567b7541b634cf893 100644
--- a/activerecord/test/cases/associations_test.rb
+++ b/activerecord/test/cases/associations_test.rb
@@ -220,6 +220,11 @@ def test_scoped_allows_conditions
     assert_equal david.projects, david.projects.scope
   end
 
+  test "proxy object is cached" do
+    david = developers(:david)
+    assert_same david.projects, david.projects
+  end
+
   test "inverses get set of subsets of the association" do
     man = Man.create
     man.interests.create