diff --git a/bindings/python/crocoddyl/core/numdiff/action.hpp b/bindings/python/crocoddyl/core/numdiff/action.hpp
index 9e0c6edfcdf6986cc7e1a521c868b693b7ce5b81..9cbdc478ccc93aa48c450976ced38c26ec590f6e 100644
--- a/bindings/python/crocoddyl/core/numdiff/action.hpp
+++ b/bindings/python/crocoddyl/core/numdiff/action.hpp
@@ -19,11 +19,10 @@ namespace bp = boost::python;
 void exposeActionNumDiff() {
   bp::class_<ActionModelNumDiff, bp::bases<ActionModelAbstract> >(
       "ActionModelNumDiff", "Abstract class for computing calcDiff by using numerical differentiation.\n\n",
-      bp::init<ActionModelAbstract&>(
-          bp::args(" self", " model"),
-          "Initialize the action model NumDiff.\n\n"
-          ":param model: action model where we compute the derivatives through NumDiff"
-          )[bp::with_custodian_and_ward<1, 2>()])
+      bp::init<ActionModelAbstract&>(bp::args(" self", " model"),
+                                     "Initialize the action model NumDiff.\n\n"
+                                     ":param model: action model where we compute the derivatives through NumDiff")
+          [bp::with_custodian_and_ward<1, 2>()])
       .def("calc", &ActionModelNumDiff::calc_wrap,
            ActionModel_calc_wraps(bp::args(" self", " data", " x", " u=None"),
                                   "Compute the next state and cost value.\n\n"
diff --git a/include/crocoddyl/core/numdiff/action.hpp b/include/crocoddyl/core/numdiff/action.hpp
index fcf7eabd85b522cae71f356dc57e9119fffd584d..0497dcce966c0fec1288384a632887ba0cd1285a 100644
--- a/include/crocoddyl/core/numdiff/action.hpp
+++ b/include/crocoddyl/core/numdiff/action.hpp
@@ -66,7 +66,7 @@ class ActionModelNumDiff : public ActionModelAbstract {
    */
   void calc(const boost::shared_ptr<ActionDataAbstract>& data, const Eigen::Ref<const Eigen::VectorXd>& x,
             const Eigen::Ref<const Eigen::VectorXd>& u);
-  
+
   /**
    * @brief @copydoc ActionDataAbstract::calcDiff()
    */
@@ -75,30 +75,30 @@ class ActionModelNumDiff : public ActionModelAbstract {
 
   /**
    * @brief Create a Data object from the given model.
-   * 
-   * @return boost::shared_ptr<ActionDataAbstract> 
+   *
+   * @return boost::shared_ptr<ActionDataAbstract>
    */
   boost::shared_ptr<ActionDataAbstract> createData();
 
   /**
    * @brief Get the model_ object
-   * 
-   * @return ActionModelAbstract& 
+   *
+   * @return ActionModelAbstract&
    */
   ActionModelAbstract& get_model() const;
 
   /**
    * @brief Get the disturbance_ object
-   * 
-   * @return const double& 
+   *
+   * @return const double&
    */
   const double& get_disturbance() const;
 
   /**
    * @brief Identify if the Gauss approximation is going to be used or not.
-   * 
-   * @return true 
-   * @return false 
+   *
+   * @return true
+   * @return false
    */
   bool get_with_gauss_approx();