diff --git a/lib/titan/thread.rb b/lib/titan/thread.rb
index b9c4929..ac5553c 100644
--- a/lib/titan/thread.rb
+++ b/lib/titan/thread.rb
@@ -103,6 +103,8 @@ def save_threads
       #
       def remove_dead_threads
         @@threads.delete_if { |thread_id,thread| !thread.alive? }
+        save_threads
+        @@threads
       end
     end
   end
diff --git a/spec/titan/thread_spec.rb b/spec/titan/thread_spec.rb
index 340ea20..f819df6 100644
--- a/spec/titan/thread_spec.rb
+++ b/spec/titan/thread_spec.rb
@@ -207,4 +207,18 @@ def new_thread(id=nil)
       Titan::Thread.save_threads
     end
   end
+
+  describe ".remove_dead_threads" do
+    it "should synchronize the threads" do
+      Titan::Thread.should_receive(:save_threads)
+      Titan::Thread.remove_dead_threads
+    end
+
+    it "should return all threads" do
+      # avoid initializing a new Hash object
+      Titan::Thread.stub!(:load_threads)
+      new_thread
+      Titan::Thread.remove_dead_threads.should equal(Titan::Thread.all)
+    end
+  end
 end