diff --git a/src/scopflow/solver/hiop/scopflow_hiop.cpp b/src/scopflow/solver/hiop/scopflow_hiop.cpp
index 627b863b..7dcfa19a 100644
--- a/src/scopflow/solver/hiop/scopflow_hiop.cpp
+++ b/src/scopflow/solver/hiop/scopflow_hiop.cpp
@@ -245,7 +245,8 @@ bool SCOPFLOWHIOPInterface::eval_f_rterm(hiop::size_type idx, const int &n,
   return true;
 }
 
-bool SCOPFLOWHIOPInterface::eval_grad_rterm(hiop::size_type idx, const int &n, double *x,
+bool SCOPFLOWHIOPInterface::eval_grad_rterm(hiop::size_type idx, const int &n,
+                                            double *x,
                                             hiop::hiopVector &gradvec) {
   (void)idx;
   (void)n;
@@ -311,11 +312,11 @@ bool SCOPFLOWHIOPInterface::eval_grad_rterm(hiop::size_type idx, const int &n, d
 }
 
 hiop::size_type SCOPFLOWHIOPInterface::get_num_rterms() const {
-  return (hiop::size_type) scopflow->Nc - 1;
+  return (hiop::size_type)scopflow->Nc - 1;
 }
 
 hiop::size_type SCOPFLOWHIOPInterface::get_num_vars() const {
-  return (hiop::size_type) scopflow->opflow0->nx;
+  return (hiop::size_type)scopflow->opflow0->nx;
 }
 
 void SCOPFLOWHIOPInterface::get_solution(double *x) const {
diff --git a/src/scopflow/solver/hiop/scopflow_hiop.h b/src/scopflow/solver/hiop/scopflow_hiop.h
index 10dbbe66..834cb2ff 100644
--- a/src/scopflow/solver/hiop/scopflow_hiop.h
+++ b/src/scopflow/solver/hiop/scopflow_hiop.h
@@ -23,7 +23,8 @@ class SCOPFLOWHIOPInterface : public hiop::hiopInterfacePriDecProblem {
                                      const double *hess,
                                      const char *master_options_file);
 
-  bool eval_f_rterm(hiop::size_type idx, const int &n, const double *x, double &rval);
+  bool eval_f_rterm(hiop::size_type idx, const int &n, const double *x,
+                    double &rval);
   bool eval_grad_rterm(hiop::size_type idx, const int &n, double *x,
                        hiop::hiopVector &grad);
 
diff --git a/src/sopflow/solver/hiop/sopflow_hiop.cpp b/src/sopflow/solver/hiop/sopflow_hiop.cpp
index 8c2ce05a..8b933ca5 100644
--- a/src/sopflow/solver/hiop/sopflow_hiop.cpp
+++ b/src/sopflow/solver/hiop/sopflow_hiop.cpp
@@ -283,7 +283,8 @@ bool SOPFLOWHIOPInterface::eval_f_rterm(hiop::size_type idx, const int &n,
   return true;
 }
 
-bool SOPFLOWHIOPInterface::eval_grad_rterm(hiop::size_type idx, const int &n, double *x,
+bool SOPFLOWHIOPInterface::eval_grad_rterm(hiop::size_type idx, const int &n,
+                                           double *x,
                                            hiop::hiopVector &gradvec) {
   (void)idx;
   (void)n;
diff --git a/src/sopflow/solver/hiop/sopflow_hiop.h b/src/sopflow/solver/hiop/sopflow_hiop.h
index aeedfa05..0aab4ffd 100644
--- a/src/sopflow/solver/hiop/sopflow_hiop.h
+++ b/src/sopflow/solver/hiop/sopflow_hiop.h
@@ -24,7 +24,8 @@ class SOPFLOWHIOPInterface : public hiop::hiopInterfacePriDecProblem {
                                      const double *hess,
                                      const char *master_options_file);
 
-  bool eval_f_rterm(hiop::size_type idx, const int &n, const double *x, double &rval);
+  bool eval_f_rterm(hiop::size_type idx, const int &n, const double *x,
+                    double &rval);
   bool eval_grad_rterm(hiop::size_type idx, const int &n, double *x,
                        hiop::hiopVector &grad);