diff --git a/lib/liudesk_cmdb/client.rb b/lib/liudesk_cmdb/client.rb
index dc97feca590591f6d39a3adcae103770874f663f..64079c41b520c36ab9cad2e93b62162290efa03c 100644
--- a/lib/liudesk_cmdb/client.rb
+++ b/lib/liudesk_cmdb/client.rb
@@ -98,7 +98,9 @@ module LiudeskCMDB
       pp.pp_object(self)
     end
 
-    alias inspect pretty_print_inspect
+    def pretty_print_inspect
+      inspect
+    end
 
     private
 
diff --git a/lib/liudesk_cmdb/model.rb b/lib/liudesk_cmdb/model.rb
index 199881cd94f8ba04ec62f386b473f44bb275b177..3ad449b3bdc635af0c4a3bf832f85678d704fbe2 100644
--- a/lib/liudesk_cmdb/model.rb
+++ b/lib/liudesk_cmdb/model.rb
@@ -227,7 +227,9 @@ module LiudeskCMDB
       pp.pp_object(self)
     end
 
-    alias inspect pretty_print_inspect
+    def pretty_print_inspect
+      inspect
+    end
 
     protected
 
diff --git a/liudesk_cmdb.gemspec b/liudesk_cmdb.gemspec
index 79816762b0a451ec5365833ac5d409634c296982..e67f4f20fb277a51fc169fab5c56321c589b19fc 100644
--- a/liudesk_cmdb.gemspec
+++ b/liudesk_cmdb.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   spec.metadata["source_code_uri"] = spec.homepage
   spec.metadata["changelog_uri"] = [spec.homepage, "-", "blob", "master", "CHANGELOG.md"].join "/"
 
-  spec.files = Dir["{lib,sig}/**/*.rb"] + %w[Gemfile Rakefile README.md CHANGELOG.md LICENSE.txt liudesk_cmb.gemspec]
+  spec.files = Dir["{lib,sig}/**/*.rb"] + %w[Gemfile Rakefile README.md CHANGELOG.md LICENSE.txt liudesk_cmdb.gemspec]
   spec.require_paths = ["lib"]
 
   spec.add_dependency "logging"