diff --git a/Gemfile.lock b/Gemfile.lock
index 5047312..27f98c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    resque-cleaner (0.4.1)
+    resque-cleaner (0.5)
       resque
 
 GEM
@@ -54,4 +54,4 @@ DEPENDENCIES
   timecop
 
 BUNDLED WITH
-   2.4.14
+   2.4.18
diff --git a/lib/resque_cleaner.rb b/lib/resque_cleaner.rb
index 4a8148b..de1cd8a 100644
--- a/lib/resque_cleaner.rb
+++ b/lib/resque_cleaner.rb
@@ -52,7 +52,7 @@ def stats_by_date(&block)
       def stats_by_class(&block)
         jobs, stats = select(&block), {}
         jobs.each do |job|
-          klass = job["payload"] && job["payload"]["class"] ? job["payload"]["class"] : "UNKNOWN"
+          klass = job.klass_name
           stats[klass] ||= 0
           stats[klass] += 1
         end
@@ -153,7 +153,7 @@ def clear_stale
         c
       end
 
-      # Exntends job(Hash instance) with some helper methods.
+      # Extends job(Hash instance) with some helper methods.
       module FailedJobEx
         # Returns true if the job has been already retried. Otherwise returns
         # false.
@@ -180,11 +180,7 @@ def after?(time)
 
         # Returns true if the class of the job matches. Otherwise returns false.
         def klass?(klass_or_name)
-          if self["payload"] && self["payload"]["class"]
-            self["payload"]["class"] == klass_or_name.to_s
-          else
-            klass_or_name=="UNKNOWN"
-          end
+          klass_name == klass_or_name.to_s
         end
 
         # Returns true if the exception raised by the failed job matches. Otherwise returns false.
@@ -196,6 +192,12 @@ def exception?(exception)
         def queue?(queue)
           self["queue"] == queue.to_s
         end
+
+        def klass_name
+          @klass_name ||= (self.dig("payload", "args", 0).is_a?(Hash) && self.dig("payload", "args", 0, "job_class")) ||
+                          self.dig("payload", "class") ||
+                          "UNKNOWN"
+        end
       end
 
       # Through the Limiter class, you accesses only the last x(default 1000)
diff --git a/lib/resque_cleaner/server.rb b/lib/resque_cleaner/server.rb
index 855b485..8e326bc 100644
--- a/lib/resque_cleaner/server.rb
+++ b/lib/resque_cleaner/server.rb
@@ -98,7 +98,8 @@ def exception_filter(id, name, exceptions, value)
           end
 
           def show_job_args(args)
-            Array(args).map { |a| a.inspect }.join("\n")
+            arguments = (args[0].is_a?(Hash) && args.dig(0, "arguments")) || args
+            Array(arguments).map { |a| a.inspect }.join("\n")
           end
 
           def text_filter(id, name, value)
@@ -118,7 +119,7 @@ def text_filter(id, name, value)
           @total = Hash.new(0)
           @jobs.each do |job|
             payload = job["payload"] || {}
-            klass = payload["class"] || 'UNKNOWN'
+            klass = job.klass_name
             exception = job["exception"] || 'UNKNOWN'
             failed_at = Time.parse job["failed_at"]
             @stats[:klass][klass] ||= Hash.new(0)
@@ -230,7 +231,7 @@ def build_urls
         f: @from,
         t: @to,
         regex: @regex
-      }.map {|key,value| "#{key}=#{URI.encode(value.to_s)}"}.join("&")
+      }.map {|key,value| "#{key}=#{CGI.escape(value.to_s)}"}.join("&")
 
       @list_url = "cleaner_list?#{params}"
       @dump_url = "cleaner_dump?#{params}"
diff --git a/lib/resque_cleaner/server/views/_stats.erb b/lib/resque_cleaner/server/views/_stats.erb
index 05bafb7..ee451f3 100644
--- a/lib/resque_cleaner/server/views/_stats.erb
+++ b/lib/resque_cleaner/server/views/_stats.erb
@@ -10,7 +10,7 @@
   </tr>
   <% @stats[type.to_sym].each do |field,count| %>
     <tr>
-      <% filter = "#{q}=#{URI.encode(field)}" %>
+      <% filter = "#{q}=#{CGI.escape(field)}" %>
       <td><%= field %></td>
       <td class="number">
         <a href="cleaner_list?<%=filter%>"><%= count[:total] %></a>
diff --git a/lib/resque_cleaner/server/views/cleaner_list.erb b/lib/resque_cleaner/server/views/cleaner_list.erb
index f38eaa8..9f168c2 100644
--- a/lib/resque_cleaner/server/views/cleaner_list.erb
+++ b/lib/resque_cleaner/server/views/cleaner_list.erb
@@ -89,7 +89,7 @@
               <% end %>
             </dd>
             <dt>Class</dt>
-            <dd><code><%= job['payload'] ? job['payload']['class'] : 'nil' %></code></dd>
+            <dd><code><%= job.klass_name %></code></dd>
             <dt>Arguments</dt>
             <dd><pre><%=h job['payload'] ? show_job_args(job['payload']['args']) : 'nil' %></pre></dd>
             <dt>Exception</dt>
diff --git a/resque-cleaner.gemspec b/resque-cleaner.gemspec
index c4e0195..428c81c 100644
--- a/resque-cleaner.gemspec
+++ b/resque-cleaner.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name              = "resque-cleaner"
-  s.version           = "0.4.1"
+  s.version           = "0.5"
   s.date              = Time.now.strftime('%Y-%m-%d')
   s.summary           = "Resque plugin cleaning up failed jobs."
   s.homepage          = "https://github.com/jobscore/resque-cleaner"
diff --git a/test/resque_web_test.rb b/test/resque_web_test.rb
index f2cebce..f35dcfb 100644
--- a/test/resque_web_test.rb
+++ b/test/resque_web_test.rb
@@ -42,6 +42,13 @@ def setup_some_failed_jobs
     assert last_response.ok?, last_response.errors
   end
 
+  it '#cleaner_list shows ActiveJob failed jobs properly formated' do
+    add_activejob_failure
+
+    get "/cleaner_list", :c => "ActiveJobGoodJob"
+    assert last_response.body.include?("ActiveJobGoodJob")
+  end
+
   it '#cleaner_list shows the failed jobs' do
     get "/cleaner_list"
     assert last_response.body.include?('BadJob')
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 698ac82..5f9c727 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -129,3 +129,32 @@ def add_empty_payload_failure
   data = Resque.encode(data)
   Resque.redis.rpush(:failed, data)
 end
+
+def add_activejob_failure
+  data = {
+    :failed_at => Time.now.strftime("%Y/%m/%d %H:%M:%S %Z"),
+    :payload   => {
+      :class => "ActiveJob::QueueAdapters::ResqueAdapter::JobWrapper",
+      :args  => [
+        :job_class => "ActiveJobGoodJob",
+        :job_id    => "0bc036ab-32c0-4ad0-9138-abdfb06658c4",
+        :provider_job_id => nil,
+        :queue_name => "download_scrape_job",
+        :priority => nil,
+        :arguments => [:good_job],
+        :executions => 0,
+        :exception_executions => {},
+        :locale => "en",
+        :timezone => "UTC",
+        :enqueued_at => "2020-10-13T16:37:18Z"
+      ]
+    },
+    :exception => "Resque::DirtyExit",
+    :error     => "Resque::DirtyExit",
+    :backtrace => [],
+    :worker    => "worker",
+    :queue     => "queue"
+  }
+  data = Resque.encode(data)
+  Resque.redis.rpush(:failed, data)
+end