diff --git a/lib/good_job/lockable.rb b/lib/good_job/lockable.rb
index 45269d6c9..f4fd1aced 100644
--- a/lib/good_job/lockable.rb
+++ b/lib/good_job/lockable.rb
@@ -25,8 +25,8 @@ module Lockable
         join_sql = <<~SQL
           LEFT JOIN pg_locks ON pg_locks.locktype = 'advisory'
             AND pg_locks.objsubid = 1
-            AND pg_locks.classid = ('x'||substr(md5(:table_name || "#{table_name}"."#{primary_key}"::text), 1, 16))::bit(32)::int
-            AND pg_locks.objid = (('x'||substr(md5(:table_name || "#{table_name}"."#{primary_key}"::text), 1, 16))::bit(64) << 32)::bit(32)::int
+            AND pg_locks.classid = ('x'||substr(md5(:table_name || #{quoted_table_name}.#{quoted_primary_key}::text), 1, 16))::bit(32)::int
+            AND pg_locks.objid = (('x'||substr(md5(:table_name || #{quoted_table_name}.#{quoted_primary_key}::text), 1, 16))::bit(64) << 32)::bit(32)::int
         SQL
 
         joins(sanitize_sql_for_conditions([join_sql, { table_name: table_name }]))