diff --git a/lib/sapling/utility.rb b/lib/sapling/utility.rb
index 576122a..fa5af53 100644
--- a/lib/sapling/utility.rb
+++ b/lib/sapling/utility.rb
@@ -7,34 +7,32 @@
 # documentation.
 
 # The default trunk text of a new tree
-SKELE_TRUNK_TEXT = "Welcome to the Sapling Editor. For details, please see the
-documentation!"
+SKELE_TRUNK_TEXT = 'Welcome to the Sapling Editor. For details, please see the
+documentation!'.freeze
 
 # The default first-branch text of a new tree
-SKELE_BRANCH_TEXT = "The first branch is always shown by default. It should act
-as the introduction to the story. From here, the user enters your world!"
+SKELE_BRANCH_TEXT = 'The first branch is always shown by default. It should act
+as the introduction to the story. From here, the user enters your world!'.freeze
 
 # The default first-leaf text of the first branch of a new tree. The leaf points
 # to it's own branch. The only way out of the program is to either force-quit or
 # reply with option 0.
-SKELE_LEAF_TEXT = "Each branch can have any number of leaves, which represent
+SKELE_LEAF_TEXT = 'Each branch can have any number of leaves, which represent
 the options a user has on that branch. Each leaf points to another branch, or
-can point to branch 0 to immediately exit."
+can point to branch 0 to immediately exit.'.freeze
 
 # The final tree
 SKELETON_TREE = [
-  {"trunk" => "#{SKELE_TRUNK_TEXT}"},
-  {"branch" => {
-    "number" => 1,
-    "text" => "#{SKELE_BRANCH_TEXT}",
-    "leaf" => [{
-      "text" => "#{SKELE_LEAF_TEXT}",
-      "branch" => 1
-      }]
-    }
-  }
-]
-
+  { 'trunk' => SKELE_TRUNK_TEXT.to_s },
+  { 'branch' => {
+    'number' => 1,
+    'text' => SKELE_BRANCH_TEXT.to_s,
+    'leaf' => [{
+      'text' => SKELE_LEAF_TEXT.to_s,
+      'branch' => 1
+    }]
+  } }
+].freeze
 
 # Verify that a file is a dialogue tree file.
 #
@@ -44,13 +42,13 @@ def verify_tree(file)
   results = []
   begin
     tree = YAML.load_file(file)
-    results << tree[0].keys.include?("trunk")
-    results << tree[1]["branch"].keys.include?("number")
-    results << tree[1]["branch"].keys.include?("text")
-    results << tree[1]["branch"].keys.include?("leaf")
+    results << tree[0].keys.include?('trunk')
+    results << tree[1]['branch'].keys.include?('number')
+    results << tree[1]['branch'].keys.include?('text')
+    results << tree[1]['branch'].keys.include?('leaf')
   rescue
     puts "Sorry chummer, I don't think this is a tree."
-    puts "Verify your YAML file is formatted properly."
+    puts 'Verify your YAML file is formatted properly.'
     results << false
   end