diff --git a/activerecord/lib/active_record/associations/through_association_scope.rb b/activerecord/lib/active_record/associations/through_association_scope.rb
index 22e1033a9d48..cabb33c4a867 100644
--- a/activerecord/lib/active_record/associations/through_association_scope.rb
+++ b/activerecord/lib/active_record/associations/through_association_scope.rb
@@ -35,7 +35,7 @@ def construct_quoted_owner_attributes(reflection)
               @owner.class.base_class.name.to_s,
               reflection.klass.columns_hash["#{as}_type"]) }
         elsif reflection.macro == :belongs_to
-          { reflection.klass.primary_key => @owner[reflection.primary_key_name] }
+          { reflection.klass.primary_key => @owner.class.quote_value(@owner[reflection.primary_key_name]) }
         else
           { reflection.primary_key_name => owner_quoted_id }
         end
diff --git a/activerecord/test/cases/associations/has_one_through_associations_test.rb b/activerecord/test/cases/associations/has_one_through_associations_test.rb
index 178c57435b67..3fcd15042272 100644
--- a/activerecord/test/cases/associations/has_one_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_one_through_associations_test.rb
@@ -6,9 +6,12 @@
 require 'models/sponsor'
 require 'models/organization'
 require 'models/member_detail'
+require 'models/minivan'
+require 'models/dashboard'
+require 'models/speedometer'
 
 class HasOneThroughAssociationsTest < ActiveRecord::TestCase
-  fixtures :member_types, :members, :clubs, :memberships, :sponsors, :organizations
+  fixtures :member_types, :members, :clubs, :memberships, :sponsors, :organizations, :minivans, :dashboards, :speedometers
   
   def setup
     @member = members(:groucho)
@@ -202,4 +205,11 @@ def test_save_of_record_with_loaded_has_one_through
       Club.find(@club.id, :include => :sponsored_member).save!
     end
   end
+  
+  def test_value_is_properly_quoted
+    minivan = Minivan.find('m1')
+    assert_nothing_raised do
+      minivan.dashboard
+    end
+  end
 end
diff --git a/activerecord/test/fixtures/dashboards.yml b/activerecord/test/fixtures/dashboards.yml
new file mode 100644
index 000000000000..e75bf46e6cd8
--- /dev/null
+++ b/activerecord/test/fixtures/dashboards.yml
@@ -0,0 +1,3 @@
+cool_first:
+  dashboard_id: d1
+  name: my_dashboard
\ No newline at end of file
diff --git a/activerecord/test/fixtures/minivans.yml b/activerecord/test/fixtures/minivans.yml
new file mode 100644
index 000000000000..e7a2ab77eb76
--- /dev/null
+++ b/activerecord/test/fixtures/minivans.yml
@@ -0,0 +1,4 @@
+cool_first:
+  minivan_id: m1
+  name: my_minivan
+  speedometer_id: s1
diff --git a/activerecord/test/fixtures/speedometers.yml b/activerecord/test/fixtures/speedometers.yml
new file mode 100644
index 000000000000..6a471aba0aef
--- /dev/null
+++ b/activerecord/test/fixtures/speedometers.yml
@@ -0,0 +1,4 @@
+cool_first:
+  speedometer_id: s1
+  name: my_speedometer
+  dashboard_id: d1
\ No newline at end of file
diff --git a/activerecord/test/models/dashboard.rb b/activerecord/test/models/dashboard.rb
new file mode 100644
index 000000000000..a8a25834b135
--- /dev/null
+++ b/activerecord/test/models/dashboard.rb
@@ -0,0 +1,3 @@
+class Dashboard < ActiveRecord::Base
+  set_primary_key :dashboard_id
+end
\ No newline at end of file
diff --git a/activerecord/test/models/minivan.rb b/activerecord/test/models/minivan.rb
new file mode 100644
index 000000000000..c753319a2067
--- /dev/null
+++ b/activerecord/test/models/minivan.rb
@@ -0,0 +1,6 @@
+class Minivan < ActiveRecord::Base
+  set_primary_key :minivan_id
+  
+  belongs_to :speedometer
+  has_one :dashboard, :through => :speedometer
+end
\ No newline at end of file
diff --git a/activerecord/test/models/speedometer.rb b/activerecord/test/models/speedometer.rb
new file mode 100644
index 000000000000..94743eff8e62
--- /dev/null
+++ b/activerecord/test/models/speedometer.rb
@@ -0,0 +1,4 @@
+class Speedometer < ActiveRecord::Base
+  set_primary_key :speedometer_id
+  belongs_to :dashboard
+end
\ No newline at end of file
diff --git a/activerecord/test/schema/schema.rb b/activerecord/test/schema/schema.rb
index bea351b95a00..641726b43fbd 100644
--- a/activerecord/test/schema/schema.rb
+++ b/activerecord/test/schema/schema.rb
@@ -164,6 +164,11 @@ def create_table(*args, &block)
     t.string  :address_country
     t.string  :gps_location
   end
+  
+  create_table :dashboards, :force => true, :id => false do |t|
+    t.string :dashboard_id
+    t.string :name
+  end
 
   create_table :developers, :force => true do |t|
     t.string   :name
@@ -290,6 +295,12 @@ def create_table(*args, &block)
     t.boolean :favourite
     t.integer :lock_version, :default => 0
   end
+  
+  create_table :minivans, :force => true, :id => false do |t|
+    t.string :minivan_id
+    t.string :name
+    t.string :speedometer_id
+  end
 
   create_table :minimalistics, :force => true do |t|
   end
@@ -452,6 +463,12 @@ def create_table(*args, &block)
     t.string :name
     t.integer :ship_id
   end
+  
+  create_table :speedometers, :force => true, :id => false do |t|
+    t.string :speedometer_id
+    t.string :name
+    t.string :dashboard_id
+  end
 
   create_table :sponsors, :force => true do |t|
     t.integer :club_id