diff --git a/lib/sidekiq_scheduler_backoff_service.rb b/lib/sidekiq_scheduler_backoff_service.rb
index 86c2e76a..6c864743 100644
--- a/lib/sidekiq_scheduler_backoff_service.rb
+++ b/lib/sidekiq_scheduler_backoff_service.rb
@@ -23,11 +23,11 @@ def record_failure
 
   def current_interval
     schedule = Sidekiq.get_schedule[name]
-    Integer(schedule["every"].first.chop)
+    Integer(schedule["every"].chop)
   end
 
   def restart_schedule(target_interval)
     schedule = Sidekiq.get_schedule[name]
-    Sidekiq.set_schedule(name, schedule.merge("every" => ["#{target_interval}s"]))
+    Sidekiq.set_schedule(name, schedule.merge("every" => "#{target_interval}s"))
   end
 end
diff --git a/spec/lib/sidekiq_scheduler_backoff_service_spec.rb b/spec/lib/sidekiq_scheduler_backoff_service_spec.rb
index 41a04a14..fa4a6c3c 100644
--- a/spec/lib/sidekiq_scheduler_backoff_service_spec.rb
+++ b/spec/lib/sidekiq_scheduler_backoff_service_spec.rb
@@ -14,7 +14,7 @@
 
       it "sets the scheduler to maximum speed and reloads the schedule" do
         subject.record_failure
-        expect(scheduled_interval).to eq(["#{min_interval}s"])
+        expect(scheduled_interval).to eq("#{min_interval}s")
       end
     end
 
@@ -25,7 +25,7 @@
 
       it "halves the scheduler speed and reloads the schedule" do
         subject.record_failure
-        expect(scheduled_interval).to eq(["#{max_interval}s"])
+        expect(scheduled_interval).to eq("#{max_interval}s")
       end
     end
 
@@ -36,7 +36,7 @@
 
       it "does nothing" do
         subject.record_failure
-        expect(scheduled_interval).to eq(["#{max_interval}s"])
+        expect(scheduled_interval).to eq("#{max_interval}s")
       end
     end
 
@@ -47,7 +47,7 @@
 
       it "sets the scheduler to minimum speed and reloads the schedule" do
         subject.record_failure
-        expect(scheduled_interval).to eq(["#{max_interval}s"])
+        expect(scheduled_interval).to eq("#{max_interval}s")
       end
     end
   end
@@ -60,7 +60,7 @@
 
       it "sets the scheduler to maximum speed and reloads the schedule" do
         subject.record_success
-        expect(scheduled_interval).to eq(["#{min_interval}s"])
+        expect(scheduled_interval).to eq("#{min_interval}s")
       end
     end
 
@@ -71,7 +71,7 @@
 
       it "does nothing" do
         subject.record_success
-        expect(scheduled_interval).to eq(["#{min_interval}s"])
+        expect(scheduled_interval).to eq("#{min_interval}s")
       end
     end
 
@@ -82,7 +82,7 @@
 
       it "decremenincrements the scheduler speed by 1 second and reloads the schedule" do
         subject.record_success
-        expect(scheduled_interval).to eq(["#{(min_interval * 4) - 1}s"])
+        expect(scheduled_interval).to eq("#{(min_interval * 4) - 1}s")
       end
     end
 
@@ -93,14 +93,14 @@
 
       it "sets the scheduler to minimum speed and reloads the schedule" do
         subject.record_success
-        expect(scheduled_interval).to eq(["#{max_interval}s"])
+        expect(scheduled_interval).to eq("#{max_interval}s")
       end
     end
   end
 end
 
 def set_scheduled_interval(interval)
-  Sidekiq.set_schedule(name.to_s, { "every" => ["#{interval}s"], "class" => "PostcodesCollectionWorker" })
+  Sidekiq.set_schedule(name.to_s, { "every" => "#{interval}s", "class" => "PostcodesCollectionWorker" })
 end
 
 def scheduled_interval