diff --git a/lib/devise/models/rememberable.rb b/lib/devise/models/rememberable.rb
index 5a175013c1..b90ba263a9 100644
--- a/lib/devise/models/rememberable.rb
+++ b/lib/devise/models/rememberable.rb
@@ -147,7 +147,7 @@ def serialize_from_cookie(*args)
         def remember_token #:nodoc:
           loop do
             token = Devise.friendly_token
-            break token unless to_adapter.find_first({ remember_token: token })
+            break token unless exists?({ remember_token: token })
           end
         end
 
diff --git a/lib/devise/token_generator.rb b/lib/devise/token_generator.rb
index 9eb74a046a..3bf1a0cdd8 100644
--- a/lib/devise/token_generator.rb
+++ b/lib/devise/token_generator.rb
@@ -19,7 +19,7 @@ def generate(klass, column)
       loop do
         raw = Devise.friendly_token
         enc = OpenSSL::HMAC.hexdigest(@digest, key, raw)
-        break [raw, enc] unless klass.to_adapter.find_first({ column => enc })
+        break [raw, enc] unless klass.exists?({ column => enc })
       end
     end