5 files changed, 6 insertions, 6 deletions
diff --git a/lib/chef/knife/core/bootstrap_context.rb b/lib/chef/knife/core/bootstrap_context.rb
index 759fb043c0..997ebd5f28 100644
--- a/lib/chef/knife/core/bootstrap_context.rb
+++ b/lib/chef/knife/core/bootstrap_context.rb
@@ -18,7 +18,7 @@
 
 require_relative "../../run_list"
 require_relative "../../util/path_helper"
-require "pathname"
+require "pathname" unless defined?(Pathname)
 require_relative "../../dist"
 
 class Chef
diff --git a/lib/chef/knife/core/gem_glob_loader.rb b/lib/chef/knife/core/gem_glob_loader.rb
index b5b9143552..41d85b83a4 100644
--- a/lib/chef/knife/core/gem_glob_loader.rb
+++ b/lib/chef/knife/core/gem_glob_loader.rb
@@ -39,7 +39,7 @@ class Chef
         # subcommand loader has been modified to load the plugins by using Kernel.load
         # with the absolute path.
         def gem_and_builtin_subcommands
-          require "rubygems"
+          require "rubygems" unless defined?(Gem)
           find_subcommands_via_rubygems
         rescue LoadError
           find_subcommands_via_dirglob
diff --git a/lib/chef/knife/core/generic_presenter.rb b/lib/chef/knife/core/generic_presenter.rb
index 77c874e71a..96a4c766a5 100644
--- a/lib/chef/knife/core/generic_presenter.rb
+++ b/lib/chef/knife/core/generic_presenter.rb
@@ -89,7 +89,7 @@ class Chef
             require "yaml"
             YAML.dump(data)
           when :pp
-            require "stringio"
+            require "stringio" unless defined?(StringIO)
             # If you were looking for some attribute and there is only one match
             # just dump the attribute value
             if config[:attribute] && data.length == 1
diff --git a/lib/chef/knife/core/object_loader.rb b/lib/chef/knife/core/object_loader.rb
index d87b3eaf71..94b956be04 100644
--- a/lib/chef/knife/core/object_loader.rb
+++ b/lib/chef/knife/core/object_loader.rb
@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 require_relative "../../util/path_helper"
 require_relative "../../data_bag_item"
 
diff --git a/lib/chef/knife/core/ui.rb b/lib/chef/knife/core/ui.rb
index cbda9c20f5..7961e1b523 100644
--- a/lib/chef/knife/core/ui.rb
+++ b/lib/chef/knife/core/ui.rb
@@ -18,10 +18,10 @@
 # limitations under the License.
 #
 
-require "forwardable"
+require "forwardable" unless defined?(Forwardable)
 require_relative "../../platform/query_helpers"
 require_relative "generic_presenter"
-require "tempfile"
+require "tempfile" unless defined?(Tempfile)
 
 class Chef
   class Knife