diff --git a/activerecord/lib/arel/visitors/oracle.rb b/activerecord/lib/arel/visitors/oracle.rb
index e8bf24a449..a0a74d365c 100644
--- a/activerecord/lib/arel/visitors/oracle.rb
+++ b/activerecord/lib/arel/visitors/oracle.rb
@@ -104,7 +104,7 @@ module Arel # :nodoc: all
           return o if o.orders.empty?
           return o unless o.cores.any? do |core|
             core.projections.any? do |projection|
-              /FIRST_VALUE/.match?(projection)
+              /FIRST_VALUE/ === projection
             end
           end
           # Previous version with join and split broke ORDER BY clause