diff --git a/spec/functions/shell_escape_spec.rb b/spec/functions/shell_escape_spec.rb
index ed63bc3..1e86d7c 100644
--- a/spec/functions/shell_escape_spec.rb
+++ b/spec/functions/shell_escape_spec.rb
@@ -1,29 +1,29 @@
 require 'spec_helper'
 
 describe 'shell_escape' do
   it { is_expected.not_to eq(nil) }
 
   describe 'signature validation' do
     it { is_expected.to run.with_params.and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
     it { is_expected.to run.with_params('foo', 'bar').and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
   end
 
   describe 'stringification' do
     it { is_expected.to run.with_params(10).and_return('10') }
     it { is_expected.to run.with_params(false).and_return('false') }
   end
 
   describe 'escaping' do
     it { is_expected.to run.with_params('foo').and_return('foo') }
     it { is_expected.to run.with_params('foo bar').and_return('foo\ bar') }
     it {
-      is_expected.to run.with_params('~`!@#$%^&*()_+-=[]\{}|;\':",./<>?')
-                        .and_return('\~\`\!@\#\$\%\^\&\*\(\)_\+-\=\[\]\\\\\{\}\|\;\\\':\",./\<\>\?')
+      is_expected.to run.with_params('~`!@#$%^&*()_-=[]\{}|;\':",./<>?')
+                        .and_return('\~\`\!@\#\$\%\^\&\*\(\)_-\=\[\]\\\\\{\}\|\;\\\':\",./\<\>\?')
     }
   end
 
   context 'with UTF8 and double byte characters' do
     it { is_expected.to run.with_params('スペー スを含むテ  キスト').and_return('\\ス\\ペ\\ー\\ \\ス\\を\\含\\む\\テ\\ \\ \\キ\\ス\\ト') }
     it { is_expected.to run.with_params('μťƒ 8  ŧĕχť').and_return('\\μ\\ť\\ƒ\\ 8\\ \\ \\ŧ\\ĕ\\χ\\ť') }
   end
 end
diff --git a/spec/functions/shell_join_spec.rb b/spec/functions/shell_join_spec.rb
index a31352a..8c4ba1e 100644
--- a/spec/functions/shell_join_spec.rb
+++ b/spec/functions/shell_join_spec.rb
@@ -1,30 +1,30 @@
 require 'spec_helper'
 
 describe 'shell_join' do
   it { is_expected.not_to eq(nil) }
 
   describe 'signature validation' do
     it { is_expected.to run.with_params.and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
     it { is_expected.to run.with_params(['foo'], ['bar']).and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
     it { is_expected.to run.with_params('foo').and_raise_error(Puppet::ParseError, %r{is not an Array}i) }
   end
 
   describe 'shell argument joining' do
     it { is_expected.to run.with_params(['foo']).and_return('foo') }
     it { is_expected.to run.with_params(['foo', 'bar']).and_return('foo bar') }
     it { is_expected.to run.with_params(['foo', 'bar baz']).and_return('foo bar\ baz') }
     it {
-      is_expected.to run.with_params(['~`!@#$', '%^&*()_+-=', '[]\{}|;\':"', ',./<>?'])
-                        .and_return('\~\`\!@\#\$ \%\^\&\*\(\)_\+-\= \[\]\\\\\{\}\|\;\\\':\" ,./\<\>\?')
+      is_expected.to run.with_params(['~`!@#$', '%^&*()_-=', '[]\{}|;\':"', ',./<>?'])
+                        .and_return('\~\`\!@\#\$ \%\^\&\*\(\)_-\= \[\]\\\\\{\}\|\;\\\':\" ,./\<\>\?')
     }
 
     context 'with UTF8 and double byte characters' do
       it { is_expected.to run.with_params(['μťƒ', '8', 'ŧĕχť']).and_return('\\μ\\ť\\ƒ 8 \\ŧ\\ĕ\\χ\\ť') }
       it { is_expected.to run.with_params(['スペー', 'スを含むテ', ' キスト']).and_return('\\ス\\ペ\\ー \\ス\\を\\含\\む\\テ \\ \\キ\\ス\\ト') }
     end
   end
 
   describe 'stringification' do
     it { is_expected.to run.with_params([10, false, 'foo']).and_return('10 false foo') }
   end
 end