diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index 359f9d8a66b59fbefb22bd0d034e86c6b7968d14..45a7000cce731b79e91cb5042730b088c2a255e6 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -56,7 +56,7 @@ def insert(values)
       end
 
       substitutes.each_with_index do |tuple, i|
-        tuple[1] = conn.substitute_at(tuple.first, i)
+        tuple[1] = conn.substitute_at(binds[i][0], i)
       end
 
       if values.empty? # empty insert