diff --git a/spec/helper.rb b/spec/helper.rb
index b1477dd0..f1528db9 100644
--- a/spec/helper.rb
+++ b/spec/helper.rb
@@ -72,7 +72,10 @@ def migration_version
 eval(migration_ruby) # rubocop:disable Security/Eval
 
 ActiveRecord::Schema.define do
-  drop_table :delayed_jobs, if_exists: true
+  if table_exists?(:delayed_jobs)
+    # `if_exists: true` was only added in Rails 5
+    drop_table :delayed_jobs
+  end
 
   CreateDelayedJobs.up