2 files changed, 6 insertions, 10 deletions
diff --git a/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb b/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb
index 2a0d16ad2c..26b57cae0a 100644
--- a/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb
+++ b/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb
@@ -5,7 +5,7 @@ module ActiveRecord::Associations::Builder
     end
 
     def valid_options
-      super + [:join_table, :association_foreign_key, :delete_sql, :insert_sql]
+      super + [:join_table, :association_foreign_key, :delete_sql]
     end
 
     def build
diff --git a/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb b/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb
index bb3e3db379..fc0d6f7598 100644
--- a/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb
+++ b/activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb
@@ -18,16 +18,12 @@ module ActiveRecord
           end
         end
 
-        if options[:insert_sql]
-          owner.connection.insert(interpolate(options[:insert_sql], record))
-        else
-          stmt = join_table.compile_insert(
-            join_table[reflection.foreign_key]             => owner.id,
-            join_table[reflection.association_foreign_key] => record.id
-          )
+        stmt = join_table.compile_insert(
+          join_table[reflection.foreign_key]             => owner.id,
+          join_table[reflection.association_foreign_key] => record.id
+        )
 
-          owner.class.connection.insert stmt
-        end
+        owner.class.connection.insert stmt
 
         record
       end