diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index <HASH>..<HASH> 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -38,11 +38,13 @@ RSpec.configure do |config|
   config.around do |ex|
     Celluloid.actor_system = nil
 
-    Thread.list.each do |thread|
-      next if thread == Thread.current
-      thread.kill
-    end unless defined?(JRUBY_VERSION) # avoid killing JRuby's Fiber thread
-
+    unless defined?(JRUBY_VERSION) # avoid killing JRuby's Fiber thread
+      Thread.list.each do |thread|
+        next if thread == Thread.current
+        thread.kill
+      end
+    end
+    
     ex.run
   end
be more explicit with jRuby condition vs. chaining it