diff --git a/xbob/learn/activation/activation.cpp b/xbob/learn/activation/activation.cpp
index 7829bddc76d373325820ab3eb9d79367eef3d693..718748d56ee578fa4e730e33afc10b97b9aee95d 100644
--- a/xbob/learn/activation/activation.cpp
+++ b/xbob/learn/activation/activation.cpp
@@ -606,5 +606,5 @@ PyTypeObject PyBobLearnActivation_Type = {
     0,                                              /* tp_dictoffset */
     (initproc)PyBobLearnActivation_init,            /* tp_init */
     0,                                              /* tp_alloc */
-    PyBobLearnActivation_new                        /* tp_new */
+    PyBobLearnActivation_new,                       /* tp_new */
 };