diff --git a/rails/rubocop.yml b/rails/rubocop.yml
index 8fb5e1cd67a6fe9b92cc75ddf3c9b7130c8ae993..247bc2a8509d626d32cbda434b084c8eb21a1759 100644
--- a/rails/rubocop.yml
+++ b/rails/rubocop.yml
@@ -148,19 +148,19 @@ Style/RedundantSelf:
 
 # enforce double quotes in string literals
 Style/StringLiterals:
-  EnforcedStyle: double_quotes
+  EnforcedStyle: double_quotes # default: single_quotes
 
 # enforce double quotes inside string interpolations
 Style/StringLiteralsInInterpolation:
-  EnforcedStyle: double_quotes
+  EnforcedStyle: double_quotes # default: single_quotes
 
 # allow only brackets, not %i or %I
 Style/SymbolArray:
-  EnforcedStyle: brackets
-  MinSize: 1
+  EnforcedStyle: brackets # default: percent
+  MinSize: 1 # default: 2
 
 # allow only brackets, not %w or %W
 Style/WordArray:
-  EnforcedStyle: brackets
-  MinSize: 1
+  EnforcedStyle: brackets # default: percent
+  MinSize: 1 # default: 2
 # END Style