diff --git a/lib/devise/strategies/two_factor_ldap_authenticatable.rb b/lib/devise/strategies/two_factor_ldap_authenticatable.rb
index c8258deb16ddb1..2efd1323a82eb1 100644
--- a/lib/devise/strategies/two_factor_ldap_authenticatable.rb
+++ b/lib/devise/strategies/two_factor_ldap_authenticatable.rb
@@ -23,7 +23,7 @@ def authenticate!
       protected
 
       def valid_params?
-        params[scope] && params[scope][:password].present?
+        params[scope].is_a?(Hash) && params[scope][:password].present?
       end
     end
   end
diff --git a/lib/devise/strategies/two_factor_pam_authenticatable.rb b/lib/devise/strategies/two_factor_pam_authenticatable.rb
index 7263ba354a8332..2164b0323427d1 100644
--- a/lib/devise/strategies/two_factor_pam_authenticatable.rb
+++ b/lib/devise/strategies/two_factor_pam_authenticatable.rb
@@ -22,7 +22,7 @@ def authenticate!
       protected
 
       def valid_params?
-        params[scope].respond_to?(:[]) && params[scope][:password].present?
+        params[scope].is_a?(Hash) && params[scope][:password].present?
       end
     end
   end