diff --git a/ebos/alucartesianindexmapper.hh b/ebos/alucartesianindexmapper.hh
index 754a60f7d..6a0873d89 100644
--- a/ebos/alucartesianindexmapper.hh
+++ b/ebos/alucartesianindexmapper.hh
@@ -230,7 +230,7 @@ public:
     {
         typedef GlobalIndexDataHandle<GridView> DataHandle ;
         assert(&grid_ == &gridView.grid());
-        return std::unique_ptr<DataHandle>(new DataHandle(gridView, cartesianIndex_));
+        return std::make_unique<DataHandle>(gridView, cartesianIndex_);
     }
 
 protected:
diff --git a/ebos/eclbasevanguard.hh b/ebos/eclbasevanguard.hh
index a39922a72..f18a9e52e 100644
--- a/ebos/eclbasevanguard.hh
+++ b/ebos/eclbasevanguard.hh
@@ -239,7 +239,7 @@ public:
         tmp.emplace_back(Opm::ParseContext::SUMMARY_UNKNOWN_GROUP, Opm::InputError::WARN);
         tmp.emplace_back(Opm::ParseContext::PARSE_EXTRA_RECORDS, Opm::InputError::WARN);
 
-        std::unique_ptr<Opm::ParseContext> parseContext(new Opm::ParseContext(tmp));
+        auto parseContext = std::make_unique<Opm::ParseContext>(tmp);
 
         const std::string ignoredKeywords = EWOMS_GET_PARAM(TypeTag, std::string, IgnoreKeywords);
         if (ignoredKeywords.size() > 0) {
diff --git a/ebos/mebos_main.cc b/ebos/mebos_main.cc
index 9e08ef8b7..c8927dc93 100644
--- a/ebos/mebos_main.cc
+++ b/ebos/mebos_main.cc
@@ -69,7 +69,7 @@ int main(int argc, char **argv)
 
     std::unique_ptr<Opm::ParseContext> parseContext
         = Opm::ebosBlackOilCreateParseContext(argc, argv);
-    std::unique_ptr<Opm::ErrorGuard> errorGuard(new Opm::ErrorGuard);
+    auto errorGuard = std::make_unique<Opm::ErrorGuard>();
 
     // deal with parallel runs
     int myRank = Dune::MPIHelper::instance(argc, argv).rank();
@@ -78,7 +78,7 @@ int main(int argc, char **argv)
     // parse the deck file
     if (myRank == 0)
         std::cout << "Parsing deck file \"" << deckFileName << "\"" << std::endl;
-    std::unique_ptr<Opm::Deck> deck(new Opm::Deck(parser.parseFile(deckFileName, *parseContext, *errorGuard)));
+    auto deck = std::make_unique<Opm::Deck>(parser.parseFile(deckFileName, *parseContext, *errorGuard));
 
     // TODO: check which variant ought to be used
     bool waterActive = deck->hasKeyword("WATER");
diff --git a/opm/simulators/flow/SimulatorFullyImplicitBlackoilEbos.hpp b/opm/simulators/flow/SimulatorFullyImplicitBlackoilEbos.hpp
index 1e900b991..83dbd3893 100644
--- a/opm/simulators/flow/SimulatorFullyImplicitBlackoilEbos.hpp
+++ b/opm/simulators/flow/SimulatorFullyImplicitBlackoilEbos.hpp
@@ -330,12 +330,12 @@ protected:
 
     std::unique_ptr<Solver> createSolver(WellModel& wellModel)
     {
-        auto model = std::unique_ptr<Model>(new Model(ebosSimulator_,
-                                                      modelParam_,
-                                                      wellModel,
-                                                      terminalOutput_));
+        auto model = std::make_unique<Model>(ebosSimulator_,
+                                             modelParam_,
+                                             wellModel,
+                                             terminalOutput_);
 
-        return std::unique_ptr<Solver>(new Solver(solverParam_, std::move(model)));
+        return std::make_unique<Solver>(solverParam_, std::move(model));
     }
 
     void outputTimestampFIP(const SimulatorTimer& timer, const std::string version)
diff --git a/opm/simulators/linalg/BlackoilAmg.hpp b/opm/simulators/linalg/BlackoilAmg.hpp
index 1d88d5cc9..86235ccd7 100644
--- a/opm/simulators/linalg/BlackoilAmg.hpp
+++ b/opm/simulators/linalg/BlackoilAmg.hpp
@@ -122,7 +122,7 @@ scaleMatrixDRS(const Operator& op, std::size_t pressureEqnIndex, const Vector& w
     using Matrix = typename Operator::matrix_type;
     using Block = typename Matrix::block_type;
     using BlockVector = typename Vector::block_type;
-    std::unique_ptr<Matrix> matrix(new Matrix(op.getmat()));
+    auto matrix = std::make_unique<Matrix>(op.getmat());
     if (param.cpr_use_drs_) {
         const auto endi = matrix->end();
         for (auto i = matrix->begin(); i != endi; ++i) {
diff --git a/opm/simulators/linalg/ISTLSolverEbos.hpp b/opm/simulators/linalg/ISTLSolverEbos.hpp
index dc324e583..fa315877e 100644
--- a/opm/simulators/linalg/ISTLSolverEbos.hpp
+++ b/opm/simulators/linalg/ISTLSolverEbos.hpp
@@ -517,7 +517,7 @@ DenseMatrix transposeDenseMatrix(const DenseMatrix& M)
             const MILU_VARIANT ilu_milu  = parameters_.ilu_milu_;
             const bool ilu_redblack = parameters_.ilu_redblack_;
             const bool ilu_reorder_spheres = parameters_.ilu_reorder_sphere_;
-            std::unique_ptr<SeqPreconditioner> precond(new SeqPreconditioner(opA.getmat(), ilu_fillin, relax, ilu_milu, ilu_redblack, ilu_reorder_spheres));
+            auto precond = std::make_unique<SeqPreconditioner>(opA.getmat(), ilu_fillin, relax, ilu_milu, ilu_redblack, ilu_reorder_spheres);
             return precond;
         }
 
diff --git a/opm/simulators/timestepping/AdaptiveSimulatorTimer.cpp b/opm/simulators/timestepping/AdaptiveSimulatorTimer.cpp
index 26c0037c6..8e0b30d1a 100644
--- a/opm/simulators/timestepping/AdaptiveSimulatorTimer.cpp
+++ b/opm/simulators/timestepping/AdaptiveSimulatorTimer.cpp
@@ -167,7 +167,7 @@ AdaptiveSimulatorTimer& AdaptiveSimulatorTimer::operator++ ()
     std::unique_ptr< SimulatorTimerInterface >
     AdaptiveSimulatorTimer::clone() const
     {
-        return std::unique_ptr< SimulatorTimerInterface > (new AdaptiveSimulatorTimer( *this ));
+        return std::make_unique<AdaptiveSimulatorTimer>(*this);
     }
 
 
diff --git a/opm/simulators/timestepping/SimulatorTimer.cpp b/opm/simulators/timestepping/SimulatorTimer.cpp
index 6efa3a7ed..a5b441260 100644
--- a/opm/simulators/timestepping/SimulatorTimer.cpp
+++ b/opm/simulators/timestepping/SimulatorTimer.cpp
@@ -165,7 +165,7 @@ namespace Opm
     std::unique_ptr< SimulatorTimerInterface >
     SimulatorTimer::clone() const
     {
-       return std::unique_ptr< SimulatorTimerInterface > (new SimulatorTimer( *this ));
+       return std::make_unique<SimulatorTimer>(*this);
     }
 
 
diff --git a/opm/simulators/wells/RateConverter.hpp b/opm/simulators/wells/RateConverter.hpp
index 8e5986465..910290255 100644
--- a/opm/simulators/wells/RateConverter.hpp
+++ b/opm/simulators/wells/RateConverter.hpp
@@ -169,7 +169,7 @@ namespace Opm {
                     using VT = typename AttributeMap::value_type;
 
                     for (const auto& r : rmap.activeRegions()) {
-                        auto v = std::unique_ptr<Value>(new Value(attr));
+                        auto v = std::make_unique<Value>(attr);
 
                         const auto stat = attr_.insert(VT(r, std::move(v)));