diff --git a/lib/pact/term.rb b/lib/pact/term.rb
index b2b4d05..0e996e6 100644
--- a/lib/pact/term.rb
+++ b/lib/pact/term.rb
@@ -1,5 +1,6 @@
 require 'pact/shared/active_support_support'
 require 'json/add/regexp'
+require 'pact/errors'
 
 module Pact
   class Term
@@ -25,9 +26,9 @@ def self.unpack_regexps source
     def initialize(attributes = {})
       @generate = attributes[:generate]
       @matcher = attributes[:matcher]
-      raise "Please specify a matcher for the Term" unless @matcher != nil
-      raise "Please specify a value to generate for the Term" unless @generate != nil
-      raise "Value to generate \"#{@generate}\" does not match regular expression #{@matcher.inspect}" unless @generate =~ @matcher
+      raise Pact::Error.new("Please specify a matcher for the Term") unless @matcher != nil
+      raise Pact::Error.new("Please specify a value to generate for the Term") unless @generate != nil
+      raise Pact::Error.new("Value to generate \"#{@generate}\" does not match regular expression #{@matcher.inspect}") unless @generate =~ @matcher
     end
 
     def to_hash
diff --git a/spec/lib/pact/term_spec.rb b/spec/lib/pact/term_spec.rb
index 28b697f..d2ced7d 100644
--- a/spec/lib/pact/term_spec.rb
+++ b/spec/lib/pact/term_spec.rb
@@ -17,20 +17,20 @@ module Pact
         context "when the matcher does not match the generated value" do
           let(:generate) { 'banana' }
           it 'raises an exception' do
-            expect { subject }.to raise_error /does not match/
+            expect { subject }.to raise_error Pact::Error, /does not match/
           end
         end
       end
       context 'when a matcher is not specified' do
         let(:matcher) { nil }
         it 'raises an exception' do
-          expect { subject }.to raise_error /Please specify a matcher/
+          expect { subject }.to raise_error Pact::Error, /Please specify a matcher/
         end
       end
       context 'when a generate is not specified' do
         let(:generate) { nil }
         it 'raises an exception' do
-          expect { subject }.to raise_error /Please specify a value/
+          expect { subject }.to raise_error Pact::Error, /Please specify a value/
         end
       end
     end