diff --git a/src/library/library.cr b/src/library/library.cr
index 12d662f..b50fb87 100644
--- a/src/library/library.cr
+++ b/src/library/library.cr
@@ -153,7 +153,8 @@ class Library
       title = @title_hash[title_id]
       existence = title.examine examine_context
       unless existence
-        examine_context["deleted_title_ids"].concat [title_id] + title.deep_titles.map &.id
+        examine_context["deleted_title_ids"].concat [title_id] +
+                                                    title.deep_titles.map &.id
         examine_context["deleted_entry_ids"].concat title.deep_entries.map &.id
       end
       existence
diff --git a/src/library/title.cr b/src/library/title.cr
index 6bae693..41efd7c 100644
--- a/src/library/title.cr
+++ b/src/library/title.cr
@@ -102,7 +102,8 @@ class Title
       title = Library.default.get_title! title_id
       existence = title.examine context
       unless existence
-        context["deleted_title_ids"].concat [title_id] + title.deep_titles.map &.id
+        context["deleted_title_ids"].concat [title_id] +
+                                            title.deep_titles.map &.id
         context["deleted_entry_ids"].concat title.deep_entries.map &.id
       end
       existence
diff --git a/src/storage.cr b/src/storage.cr
index 1f0aab7..2f01863 100644
--- a/src/storage.cr
+++ b/src/storage.cr
@@ -467,13 +467,14 @@ class Storage
   end
 
   # Limit mark targets with given arguments
-  def mark_unavailable(trash_ids_candidates : Array(String), trash_titles_candidates : Array(String))
+  def mark_unavailable(ids_candidates : Array(String),
+                       titles_candidates : Array(String))
     MainFiber.run do
       get_db do |db|
         # Detect dangling entry IDs
         trash_ids = [] of String
         db.query "select path, id from ids where id in " \
-                 "(#{trash_ids_candidates.join "," { |i| "'#{i}'" }})" do |rs|
+                 "(#{ids_candidates.join "," { |i| "'#{i}'" }})" do |rs|
           rs.each do
             path = rs.read String
             fullpath = Path.new(path).expand(Config.current.library_path).to_s
@@ -490,7 +491,7 @@ class Storage
         # Detect dangling title IDs
         trash_titles = [] of String
         db.query "select path, id from titles where id in " \
-                 "(#{trash_titles_candidates.join "," { |i| "'#{i}'" }})" do |rs|
+                 "(#{titles_candidates.join "," { |i| "'#{i}'" }})" do |rs|
           rs.each do
             path = rs.read String
             fullpath = Path.new(path).expand(Config.current.library_path).to_s