diff --git a/src/ameba/ast/variabling/variable.cr b/src/ameba/ast/variabling/variable.cr
index 2c98b653..1a9d2943 100644
--- a/src/ameba/ast/variabling/variable.cr
+++ b/src/ameba/ast/variabling/variable.cr
@@ -174,7 +174,7 @@ module Ameba::AST
         node.accept self
       end
 
-      # @[AlwaysInline]
+      @[AlwaysInline]
       private def includes_reference?(val)
         val.to_s.includes?(@reference)
       end