diff --git a/internal/ceres/dynamic_sparsity_test.cc b/internal/ceres/dynamic_sparsity_test.cc
index 7cf5b34..c6bba20 100644
--- a/internal/ceres/dynamic_sparsity_test.cc
+++ b/internal/ceres/dynamic_sparsity_test.cc
@@ -338,7 +338,7 @@
 
 class EuclideanDistanceFunctor {
  public:
-  explicit EuclideanDistanceFunctor(const double& sqrt_weight)
+  explicit EuclideanDistanceFunctor(const double sqrt_weight)
       : sqrt_weight_(sqrt_weight) {}
 
   template <typename T>
diff --git a/internal/ceres/iterative_schur_complement_solver.cc b/internal/ceres/iterative_schur_complement_solver.cc
index 62b8a06..900e669 100644
--- a/internal/ceres/iterative_schur_complement_solver.cc
+++ b/internal/ceres/iterative_schur_complement_solver.cc
@@ -132,7 +132,8 @@
   return summary;
 }
 
-void IterativeSchurComplementSolver::CreatePreconditioner(BlockSparseMatrix* A) {
+void IterativeSchurComplementSolver::CreatePreconditioner(
+    BlockSparseMatrix* A) {
   if (options_.preconditioner_type == IDENTITY ||
       preconditioner_.get() != NULL) {
     return;