diff --git a/src/_wrappers.c b/src/_wrappers.c
index 7e49e06..5b99a13 100644
--- a/src/_wrappers.c
+++ b/src/_wrappers.c
@@ -159,6 +159,18 @@ static PyObject *WraptObjectProxy_call(
 
 /* ------------------------------------------------------------------------- */
 
+static int WraptObjectProxy_bool(WraptObjectProxyObject *self)
+{
+    if (!self->wrapped) {
+      PyErr_SetString(PyExc_ValueError, "wrapper has not been initialised");
+      return -1;
+    }
+
+    return PyObject_IsTrue(self->wrapped);
+}
+
+/* ------------------------------------------------------------------------- */
+
 static PyObject *WraptObjectProxy_dir(
         WraptObjectProxyObject *self, PyObject *args)
 {
@@ -459,6 +471,56 @@ static PyObject *WraptObjectProxy_iter(WraptObjectProxyObject *self)
 
 /* ------------------------------------------------------------------------- */
 
+static PyNumberMethods WraptObjectProxy_as_number = {
+    0,                      /*nb_add*/
+    0,                      /*nb_subtract*/
+    0,                      /*nb_multiply*/
+#if PY_MAJOR_VERSION < 3
+    0,                      /*nb_divide*/
+#endif
+    0,                      /*nb_remainder*/
+    0,                      /*nb_divmod*/
+    0,                      /*nb_power*/
+    0,                      /*nb_negative*/
+    0,                      /*nb_positive*/
+    0,                      /*nb_absolute*/
+    (inquiry)WraptObjectProxy_bool, /*nb_nonzero/nb_bool*/
+    0,                      /*nb_invert*/
+    0,                      /*nb_lshift*/
+    0,                      /*nb_rshift*/
+    0,                      /*nb_and*/
+    0,                      /*nb_xor*/
+    0,                      /*nb_or*/
+#if PY_MAJOR_VERSION < 3
+    0,                      /*nb_coerce*/
+#endif
+    0,                      /*nb_int*/
+    0,                      /*nb_long*/
+    0,                      /*nb_float*/
+#if PY_MAJOR_VERSION < 3
+    0,                      /*nb_oct*/
+    0,                      /*nb_hex*/
+#endif
+    0,                      /*nb_inplace_add*/
+    0,                      /*nb_inplace_subtract*/
+    0,                      /*nb_inplace_multiply*/
+#if PY_MAJOR_VERSION < 3
+    0,                      /*nb_inplace_divide*/
+#endif
+    0,                      /*nb_inplace_remainder*/
+    0,                      /*nb_inplace_power*/
+    0,                      /*nb_inplace_lshift*/
+    0,                      /*nb_inplace_rshift*/
+    0,                      /*nb_inplace_and*/
+    0,                      /*nb_inplace_xor*/
+    0,                      /*nb_inplace_or*/
+    0,                      /*nb_floor_divide*/
+    0,                      /*nb_true_divide*/
+    0,                      /*nb_inplace_floor_divide*/
+    0,                      /*nb_inplace_true_divide*/
+    0,                      /*nb_index*/
+};
+
 static PyMethodDef WraptObjectProxy_methods[] = {
     { "__dir__",    (PyCFunction)WraptObjectProxy_dir,  METH_NOARGS, 0 },
     { "__enter__",  (PyCFunction)WraptObjectProxy_enter,
@@ -496,7 +558,7 @@ PyTypeObject WraptObjectProxy_Type = {
     0,                      /*tp_setattr*/
     0,                      /*tp_compare*/
     0,                      /*tp_repr*/
-    0,                      /*tp_as_number*/
+    &WraptObjectProxy_as_number, /*tp_as_number*/
     0,                      /*tp_as_sequence*/
     0,                      /*tp_as_mapping*/
     (hashfunc)WraptObjectProxy_hash, /*tp_hash*/
diff --git a/src/wrappers.py b/src/wrappers.py
index 33de4fb..662a5fd 100644
--- a/src/wrappers.py
+++ b/src/wrappers.py
@@ -131,6 +131,12 @@ class ObjectProxy(six.with_metaclass(_ObjectProxyMetaType)):
     def __ne__(self, other):
         return self._self_wrapped != other
 
+    def __nonzero__(self):
+        return bool(self._self_wrapped)
+
+    def __bool__(self):
+        return bool(self._self_wrapped)
+
     def __hash__(self):
         return hash(self._self_wrapped)
 
diff --git a/tests/test_object_proxy.py b/tests/test_object_proxy.py
index cd64dec..80214e4 100644
--- a/tests/test_object_proxy.py
+++ b/tests/test_object_proxy.py
@@ -714,5 +714,20 @@ class TestEqualityObjectProxy(unittest.TestCase):
         self.assertTrue(two == two)
         self.assertTrue(two != three)
 
+class TestAsNumberObjectProxy(unittest.TestCase):
+
+    def test_nonzero(self):
+        true = wrapt.ObjectProxy(True)
+        false = wrapt.ObjectProxy(False)
+
+        self.assertTrue(true)
+        self.assertFalse(false)
+
+        self.assertTrue(bool(true))
+        self.assertFalse(bool(false))
+
+        self.assertTrue(not false)
+        self.assertFalse(not true)
+
 if __name__ == '__main__':
     unittest.main()