diff --git a/activemodel/lib/active_model/validations/length.rb b/activemodel/lib/active_model/validations/length.rb
index a7af4f2b4d6f889087fb78d6ae8600648d7c4e39..ecae73a66e1f495746fd42964f12f51599a54ca1 100644
--- a/activemodel/lib/active_model/validations/length.rb
+++ b/activemodel/lib/active_model/validations/length.rb
@@ -41,13 +41,9 @@ def validate_each(record, attribute, value)
         CHECKS.each do |key, validity_check|
           next unless check_value = options[key]
 
-          valid_value = if key == :maximum
-            value.nil? || value.size.send(validity_check, check_value)
-          else
-            value && value.size.send(validity_check, check_value)
-          end
+          value ||= [] if key == :maximum
 
-          next if valid_value
+          next if value && value.size.send(validity_check, check_value)
 
           errors_options = options.except(*RESERVED_OPTIONS)
           errors_options[:count] = check_value