diff --git a/lib/cane/threshold_check.rb b/lib/cane/threshold_check.rb
index de95e12..110b7e9 100644
--- a/lib/cane/threshold_check.rb
+++ b/lib/cane/threshold_check.rb
@@ -1,51 +1,55 @@
 require 'cane/file'
 
-# Configurable check that allows the contents of a file to be compared against
-# a given value.
-class ThresholdCheck < Struct.new(:opts)
-
-  def self.key; :threshold; end
-  def self.options
-    {
-      gte: ["If FILE contains a number, verify it is >= to THRESHOLD",
-              variable: "FILE,THRESHOLD",
-              type:     Array]
-    }
-  end
+module Cane
+
+  # Configurable check that allows the contents of a file to be compared against
+  # a given value.
+  class ThresholdCheck < Struct.new(:opts)
+
+    def self.key; :threshold; end
+    def self.options
+      {
+        gte: ["If FILE contains a number, verify it is >= to THRESHOLD",
+                variable: "FILE,THRESHOLD",
+                type:     Array]
+      }
+    end
+
+    def violations
+      thresholds.map do |operator, file, limit|
+        value = value_from_file(file)
+
+        unless value.send(operator, limit.to_f)
+          {
+            description: 'Quality threshold crossed',
+            label:       "%s is %s, should be %s %s" % [
+              file, operator, value, limit
+            ]
+          }
+        end
+      end.compact
+    end
 
-  def violations
-    thresholds.map do |operator, file, limit|
-      value = value_from_file(file)
-
-      unless value.send(operator, limit.to_f)
-        {
-          description: 'Quality threshold crossed',
-          label:       "%s is %s, should be %s %s" % [
-            file, operator, value, limit
-          ]
-        }
+    def value_from_file(file)
+      begin
+        contents = Cane::File.contents(file).chomp.to_f
+      rescue Errno::ENOENT
+        UnavailableValue.new
       end
-    end.compact
-  end
+    end
 
-  def value_from_file(file)
-    begin
-      contents = Cane::File.contents(file).chomp.to_f
-    rescue Errno::ENOENT
-      UnavailableValue.new
+    def thresholds
+      (opts[:gte] || []).map do |x|
+        x.unshift(:>=)
+      end
     end
-  end
 
-  def thresholds
-    (opts[:gte] || []).map do |x|
-      x.unshift(:>=)
+    # Null object for all cases when the value to be compared against cannot be
+    # read.
+    class UnavailableValue
+      def >=(_); false end
+      def to_s; 'unavailable' end
     end
   end
 
-  # Null object for all cases when the value to be compared against cannot be
-  # read.
-  class UnavailableValue
-    def >=(_); false end
-    def to_s; 'unavailable' end
-  end
 end
diff --git a/spec/threshold_check_spec.rb b/spec/threshold_check_spec.rb
index a6c654e..0e30f3a 100644
--- a/spec/threshold_check_spec.rb
+++ b/spec/threshold_check_spec.rb
@@ -2,9 +2,9 @@
 
 require 'cane/threshold_check'
 
-describe ThresholdCheck do
+describe Cane::ThresholdCheck do
   it 'returns a value of unavailable when file cannot be read' do
-    check = ThresholdCheck.new(gte: [['bogus_file', 20]])
+    check = Cane::ThresholdCheck.new(gte: [['bogus_file', 20]])
     violations = check.violations
     violations.length.should == 1
     violations[0].to_s.should include("unavailable")