diff --git a/src/dynamic-graph-py.cc b/src/dynamic-graph-py.cc
index 083f35f0e6559719ca24490c8268efd5072c8630..3ba6c146cf3c44460219b91f1954ffd7689cae2d 100644
--- a/src/dynamic-graph-py.cc
+++ b/src/dynamic-graph-py.cc
@@ -34,6 +34,7 @@ namespace dynamicgraph {
       extern PyObject* getValue(PyObject* self, PyObject* args);
       extern PyObject* setValue(PyObject* self, PyObject* args);
       extern PyObject* recompute(PyObject* self, PyObject* args);
+      extern PyObject* unplug(PyObject* self, PyObject* args);
     }
     namespace entity {
       extern PyObject* create(PyObject* self, PyObject* args);
@@ -155,6 +156,8 @@ static PyMethodDef dynamicGraphMethods[] = {
    METH_VARARGS, "Set the value of a signal"},
   {"signal_base_recompute", dynamicgraph::python::signalBase::recompute,
    METH_VARARGS, "Recompute the signal at given time"},
+  {"signal_base_unplug", dynamicgraph::python::signalBase::unplug,
+   METH_VARARGS, "Unplug the signal"},
   // Entity
   {"create_entity", dynamicgraph::python::entity::create, METH_VARARGS,
    "create an Entity C++ object"},
diff --git a/src/dynamic_graph/signal_base.py b/src/dynamic_graph/signal_base.py
index c4836102d6270fc5b162bdf6738c3483faae3c01..e1c57f6d6648bc41a1986e0748fb8c603b70ecf6 100644
--- a/src/dynamic_graph/signal_base.py
+++ b/src/dynamic_graph/signal_base.py
@@ -211,9 +211,15 @@ class SignalBase (object) :
         Force signal to recompute the value at given time.
         """
         return wrap.signal_base_recompute(self.obj, time)
+    def unplug(self):
+        """
+        Unplug a PTR signal.
+        """
+        return wrap.signal_base_unplug(self.obj)
 
     def __str__(self):
         """
         Print signal in a string
         """
         return wrap.signal_base_display(self.obj)
+
diff --git a/src/signal-base-py.cc b/src/signal-base-py.cc
index e0d6d8a6117b2bd138431ae232f247e624d6896a..793698762f104f65be9440ea6f3acc6cffa46002 100644
--- a/src/signal-base-py.cc
+++ b/src/signal-base-py.cc
@@ -202,6 +202,25 @@ namespace dynamicgraph {
 	}
 	return Py_BuildValue("");
       }
+
+      PyObject* unplug(PyObject* /*self*/, PyObject* args)
+      {
+	void * pointer = NULL;
+	PyObject* object = NULL;
+	if (!PyArg_ParseTuple(args,"O", &object))
+	  return NULL;
+	if (!PyCObject_Check(object))
+	  return NULL;
+
+	pointer = PyCObject_AsVoidPtr(object);
+	SignalBase<int>* signal = (SignalBase<int>*)pointer;
+	try {
+	  signal->unplug();
+	} catch (const std::exception& exc) {
+	  PyErr_SetString(error, exc.what());
+	}
+	return Py_BuildValue("");
+      }
     }
   }
 }