diff --git a/vm/builtin/thread.hpp b/vm/builtin/thread.hpp
index f687a814ce..cdad77a821 100644
--- a/vm/builtin/thread.hpp
+++ b/vm/builtin/thread.hpp
@@ -3,6 +3,7 @@
 
 #include "vm/exception.hpp"
 #include "vm/type_info.hpp"
+#include "vm/signal.hpp"
 
 #include "builtin/object.hpp"
 #include "builtin/randomizer.hpp"
@@ -76,6 +77,10 @@ namespace rubinius {
       return vm_;
     }
 
+    bool signal_handler_thread_p() {
+      return runner_ == handle_tramp;
+    }
+
   public:
 
     /**
diff --git a/vm/shared_state.cpp b/vm/shared_state.cpp
index f0b7a4caab..b62432514f 100644
--- a/vm/shared_state.cpp
+++ b/vm/shared_state.cpp
@@ -17,6 +17,7 @@
 #include "world_state.hpp"
 #include "builtin/randomizer.hpp"
 #include "builtin/array.hpp"
+#include "builtin/thread.hpp"
 
 #ifdef ENABLE_LLVM
 #include "llvm/state.hpp"
@@ -140,7 +141,10 @@ namespace rubinius {
         i != threads_.end();
         ++i) {
       if(VM* vm = (*i)->as_vm()) {
-        threads->append(state, (Object*)vm->thread.get());
+        Thread *thread = vm->thread.get();
+        if(!thread->signal_handler_thread_p()) {
+          threads->append(state, (Object*)thread);
+        }
       }
     }
     return threads;
diff --git a/vm/signal.hpp b/vm/signal.hpp
index 24f00b018a..1aaa1d7556 100644
--- a/vm/signal.hpp
+++ b/vm/signal.hpp
@@ -13,6 +13,8 @@ namespace rubinius {
   struct CallFrame;
   class Thread;
 
+  Object* handle_tramp(STATE);
+
   class SignalHandler : public Lockable {
     VM* target_;
     VM* self_;