diff --git a/src/google/protobuf/descriptor.cc b/src/google/protobuf/descriptor.cc
index 64c316fcdcaac..951fcfce09796 100644
--- a/src/google/protobuf/descriptor.cc
+++ b/src/google/protobuf/descriptor.cc
@@ -9796,7 +9796,8 @@ bool DescriptorBuilder::OptionInterpreter::InterpretSingleOption(
 
   // First set the value on the UnknownFieldSet corresponding to the
   // innermost message.
-  std::unique_ptr<UnknownFieldSet> unknown_fields(new UnknownFieldSet());
+  std::unique_ptr<UnknownFieldSet> unknown_fields =
+      std::make_unique<UnknownFieldSet>();
   if (!SetOptionValue(field, unknown_fields.get())) {
     return false;  // SetOptionValue() already added the error.
   }
@@ -9806,8 +9807,8 @@ bool DescriptorBuilder::OptionInterpreter::InterpretSingleOption(
   for (std::vector<const FieldDescriptor*>::reverse_iterator iter =
            intermediate_fields.rbegin();
        iter != intermediate_fields.rend(); ++iter) {
-    std::unique_ptr<UnknownFieldSet> parent_unknown_fields(
-        new UnknownFieldSet());
+    std::unique_ptr<UnknownFieldSet> parent_unknown_fields =
+        std::make_unique<UnknownFieldSet>();
     switch ((*iter)->type()) {
       case FieldDescriptor::TYPE_MESSAGE: {
         std::string outstr;
diff --git a/src/google/protobuf/extension_set_unittest.cc b/src/google/protobuf/extension_set_unittest.cc
index d0902835e02a3..cbcde29b6d148 100644
--- a/src/google/protobuf/extension_set_unittest.cc
+++ b/src/google/protobuf/extension_set_unittest.cc
@@ -543,7 +543,7 @@ TEST(ExtensionSetTest, ArenaSetAllocatedMessageAndRelease) {
 
 TEST(ExtensionSetTest, SwapExtensionBothFullWithArena) {
   Arena arena1;
-  std::unique_ptr<Arena> arena2(new Arena());
+  std::unique_ptr<Arena> arena2 = std::make_unique<Arena>();
 
   unittest::TestAllExtensions* message1 =
       Arena::Create<unittest::TestAllExtensions>(&arena1);
diff --git a/src/google/protobuf/text_format_unittest.cc b/src/google/protobuf/text_format_unittest.cc
index d7a70ab467961..3fc835d23c43b 100644
--- a/src/google/protobuf/text_format_unittest.cc
+++ b/src/google/protobuf/text_format_unittest.cc
@@ -1797,7 +1797,8 @@ class TextFormatParserTest : public testing::Test {
  protected:
   void ExpectFailure(const std::string& input, const std::string& message,
                      int line, int col) {
-    std::unique_ptr<unittest::TestAllTypes> proto(new unittest::TestAllTypes);
+    std::unique_ptr<unittest::TestAllTypes> proto =
+        std::make_unique<unittest::TestAllTypes>();
     ExpectFailure(input, message, line, col, proto.get());
   }
 
@@ -1867,7 +1868,8 @@ class TextFormatParserTest : public testing::Test {
 };
 
 TEST_F(TextFormatParserTest, ParseInfoTreeBuilding) {
-  std::unique_ptr<unittest::TestAllTypes> message(new unittest::TestAllTypes);
+  std::unique_ptr<unittest::TestAllTypes> message =
+      std::make_unique<unittest::TestAllTypes>();
   const Descriptor* d = message->GetDescriptor();
 
   std::string stringData =
@@ -1934,7 +1936,8 @@ TEST_F(TextFormatParserTest, ParseInfoTreeBuilding) {
 }
 
 TEST_F(TextFormatParserTest, ParseFieldValueFromString) {
-  std::unique_ptr<unittest::TestAllTypes> message(new unittest::TestAllTypes);
+  std::unique_ptr<unittest::TestAllTypes> message =
+      std::make_unique<unittest::TestAllTypes>();
   const Descriptor* d = message->GetDescriptor();
 
 #define EXPECT_FIELD(name, value, valuestring)                             \