diff --git a/lib/kuniri/core/configuration/language_available.rb b/lib/kuniri/core/configuration/language_available.rb
index <HASH>..<HASH> 100644
--- a/lib/kuniri/core/configuration/language_available.rb
+++ b/lib/kuniri/core/configuration/language_available.rb
@@ -7,6 +7,6 @@
 module Configuration
   # Handling the languages available in the system.
   class LanguageAvailable
-    LANGUAGES = %w(ruby python cplusplus c).freeze # Put here new language.
+    LANGUAGES = %w[ruby python cplusplus c].freeze # Put here new language.
   end
 end
diff --git a/lib/kuniri/core/configuration/log_available.rb b/lib/kuniri/core/configuration/log_available.rb
index <HASH>..<HASH> 100644
--- a/lib/kuniri/core/configuration/log_available.rb
+++ b/lib/kuniri/core/configuration/log_available.rb
@@ -7,6 +7,6 @@
 module Configuration
   # Configuration for the monitor available.
   class LogAvailable
-    LOG = %w(html txt).freeze # List with log types.
+    LOG = %w[html txt].freeze # List with log types.
   end
 end
use [] instead of () in %w-literals