diff --git a/rubocop.yml b/rubocop.yml
index 73dc4c99..157792db 100644
--- a/rubocop.yml
+++ b/rubocop.yml
@@ -253,7 +253,7 @@ Lint/StructNewOverride:
   Enabled: false
 
 Lint/SymbolConversion:
-  Enabled: false
+  Enabled: true
 
 Lint/ToEnumArguments:
   Enabled: false
diff --git a/test/fixtures/full_config.yml b/test/fixtures/full_config.yml
index 805dc100..8ae230d3 100644
--- a/test/fixtures/full_config.yml
+++ b/test/fixtures/full_config.yml
@@ -1497,7 +1497,7 @@ Lint/SuppressedException:
   VersionChanged: '1.12'
 Lint/SymbolConversion:
   Description: Checks for unnecessary symbol conversions.
-  Enabled: false
+  Enabled: true
   VersionAdded: '1.9'
   EnforcedStyle: strict
   SupportedStyles: