2 files changed, 3 insertions, 1 deletions
diff --git a/activemodel/lib/active_model/validations/length.rb b/activemodel/lib/active_model/validations/length.rb
index d6c80b2c5d..02759b4ccb 100644
--- a/activemodel/lib/active_model/validations/length.rb
+++ b/activemodel/lib/active_model/validations/length.rb
@@ -32,7 +32,7 @@ module ActiveModel
           value = options[key]
 
           unless (value.is_a?(Integer) && value >= 0) || value == Float::INFINITY || value.is_a?(Symbol) || value.is_a?(Proc)
-            raise ArgumentError, ":#{key} must be a nonnegative Integer, Infinity, Symbol, or Proc"
+            raise ArgumentError, ":#{key} must be a non-negative Integer, Infinity, Symbol, or Proc"
           end
         end
       end
diff --git a/activemodel/lib/active_model/validations/numericality.rb b/activemodel/lib/active_model/validations/numericality.rb
index 9cb8b543b0..51e224d5cd 100644
--- a/activemodel/lib/active_model/validations/numericality.rb
+++ b/activemodel/lib/active_model/validations/numericality.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "bigdecimal/util"
+
 module ActiveModel
   module Validations
     class NumericalityValidator < EachValidator # :nodoc: