diff --git a/_pyceres/core/problem.h b/_pyceres/core/problem.h
index 54131f5..10d7627 100644
--- a/_pyceres/core/problem.h
+++ b/_pyceres/core/problem.h
@@ -42,13 +42,15 @@ void BindProblem(py::module& m) {
 
   py::class_<ceres::Problem::EvaluateOptions>(m, "EvaluateOptions")
       .def(py::init<>())
-      .def("set_parameter_blocks", [](ceres::Problem::EvaluateOptions& self, std::vector<py::array_t<double>>& blocks) {
-            self.parameter_blocks.clear();
-            for (auto it = blocks.begin(); it != blocks.end(); ++it) {
-              py::buffer_info info = it->request();
-              self.parameter_blocks.push_back(static_cast<double*>(info.ptr));
-            }
-          })
+      .def("set_parameter_blocks",
+           [](ceres::Problem::EvaluateOptions& self,
+              std::vector<py::array_t<double>>& blocks) {
+             self.parameter_blocks.clear();
+             for (auto it = blocks.begin(); it != blocks.end(); ++it) {
+               py::buffer_info info = it->request();
+               self.parameter_blocks.push_back(static_cast<double*>(info.ptr));
+             }
+           })
       .def_readwrite("apply_loss_function",
                      &ceres::Problem::EvaluateOptions::apply_loss_function)
       .def_readwrite("num_threads",
@@ -238,20 +240,22 @@ void BindProblem(py::module& m) {
            [](ceres::Problem& self, ResidualBlockIDWrapper& residual_block_id) {
              self.RemoveResidualBlock(residual_block_id.id);
            })
-      .def("evaluate_residuals",
+      .def(
+          "evaluate_residuals",
           [](ceres::Problem& self,
-              const ceres::Problem::EvaluateOptions& options) {
-             std::vector<double> residuals;
-             self.Evaluate(options, nullptr, &residuals, nullptr, nullptr);
-             return residuals;
-           },
-           py::arg("options") = ceres::Problem::EvaluateOptions())
-      .def("evaluate_jacobian",
-           [](ceres::Problem& self,
-              const ceres::Problem::EvaluateOptions& options) {
-             ceres::CRSMatrix jacobian;
-             self.Evaluate(options, nullptr, nullptr, nullptr, &jacobian);
-             return jacobian;
-           },
-           py::arg("options") = ceres::Problem::EvaluateOptions());
+             const ceres::Problem::EvaluateOptions& options) {
+            std::vector<double> residuals;
+            self.Evaluate(options, nullptr, &residuals, nullptr, nullptr);
+            return residuals;
+          },
+          py::arg("options") = ceres::Problem::EvaluateOptions())
+      .def(
+          "evaluate_jacobian",
+          [](ceres::Problem& self,
+             const ceres::Problem::EvaluateOptions& options) {
+            ceres::CRSMatrix jacobian;
+            self.Evaluate(options, nullptr, nullptr, nullptr, &jacobian);
+            return jacobian;
+          },
+          py::arg("options") = ceres::Problem::EvaluateOptions());
 }