diff --git a/unittest/apiexample_test.cc b/unittest/apiexample_test.cc
index 438b9216ad..281b4ac605 100644
--- a/unittest/apiexample_test.cc
+++ b/unittest/apiexample_test.cc
@@ -27,6 +27,7 @@
 #include <fstream>
 #include <iostream>
 #include <locale>
+#include <memory>               // std::unique_ptr
 #include <string>
 #include "baseapi.h"
 #include "include_gunit.h"
@@ -55,7 +56,7 @@ void OCRTester(const char* imgname, const char* groundtruth,
   file.imbue(loc);  // Use it for file input
   std::string gtText((std::istreambuf_iterator<char>(file)),
                      std::istreambuf_iterator<char>());
-  tesseract::TessBaseAPI* api = new tesseract::TessBaseAPI();
+  std::unique_ptr<tesseract::TessBaseAPI> api(new tesseract::TessBaseAPI());
   ASSERT_FALSE(api->Init(tessdatadir, lang))
       << "Could not initialize tesseract.";
   Pix* image = pixRead(imgname);
diff --git a/unittest/loadlang_test.cc b/unittest/loadlang_test.cc
index aba2945dc0..01b467f856 100644
--- a/unittest/loadlang_test.cc
+++ b/unittest/loadlang_test.cc
@@ -16,6 +16,7 @@
 // limitations under the License.
 ///////////////////////////////////////////////////////////////////////
 
+#include <memory>               // std::unique_ptr
 #include <time.h>
 #include "baseapi.h"
 #include "include_gunit.h"
@@ -35,7 +36,7 @@ class QuickTest : public testing::Test {
 };
 
 void LangLoader(const char* lang, const char* tessdatadir) {
-  tesseract::TessBaseAPI* api = new tesseract::TessBaseAPI();
+  std::unique_ptr<tesseract::TessBaseAPI> api(new tesseract::TessBaseAPI());
   ASSERT_FALSE(api->Init(tessdatadir, lang))
       << "Could not initialize tesseract for $lang.";
   api->End();
diff --git a/unittest/osd_test.cc b/unittest/osd_test.cc
index cf49cb2e15..dedb20cc4d 100644
--- a/unittest/osd_test.cc
+++ b/unittest/osd_test.cc
@@ -20,6 +20,7 @@
 
 //#include "log.h"
 #include <iostream>
+#include <memory>               // std::unique_ptr
 #include <string>
 #include "baseapi.h"
 #include "include_gunit.h"
@@ -33,7 +34,7 @@ class TestClass : public testing::Test {
 
 void OSDTester(int expected_deg, const char* imgname, const char* tessdatadir) {
   // log.info() << tessdatadir << " for image: " << imgname << std::endl;
-  tesseract::TessBaseAPI* api = new tesseract::TessBaseAPI();
+  std::unique_ptr<tesseract::TessBaseAPI> api(new tesseract::TessBaseAPI());
   ASSERT_FALSE(api->Init(tessdatadir, "osd"))
       << "Could not initialize tesseract.";
   Pix* image = pixRead(imgname);
diff --git a/unittest/progress_test.cc b/unittest/progress_test.cc
index b5c5b37d1f..bd7e1d8b54 100644
--- a/unittest/progress_test.cc
+++ b/unittest/progress_test.cc
@@ -21,6 +21,7 @@
 #include <fstream>
 #include <iostream>
 #include <locale>
+#include <memory>               // std::unique_ptr
 #include <string>
 #include "baseapi.h"
 #include "gmock/gmock.h"
@@ -88,7 +89,7 @@ void ClassicProgressTester(const char* imgname, const char* tessdatadir,
   using ::testing::Return;
   using ::testing::SaveArg;
 
-  tesseract::TessBaseAPI* api = new tesseract::TessBaseAPI();
+  std::unique_ptr<tesseract::TessBaseAPI> api(new tesseract::TessBaseAPI());
   ASSERT_FALSE(api->Init(tessdatadir, lang))
       << "Could not initialize tesseract.";
   Pix* image = pixRead(imgname);
@@ -124,7 +125,7 @@ void NewProgressTester(const char* imgname, const char* tessdatadir,
   using ::testing::Return;
   using ::testing::SaveArg;
 
-  tesseract::TessBaseAPI* api = new tesseract::TessBaseAPI();
+  std::unique_ptr<tesseract::TessBaseAPI> api(new tesseract::TessBaseAPI());
   ASSERT_FALSE(api->Init(tessdatadir, lang))
       << "Could not initialize tesseract.";
   Pix* image = pixRead(imgname);
@@ -149,12 +150,12 @@ void NewProgressTester(const char* imgname, const char* tessdatadir,
   pixDestroy(&image);
 }
 
-TEST(QuickTest, ClassicProgressReporitng) {
+TEST(QuickTest, ClassicProgressReporting) {
   ClassicProgressTester(TESTING_DIR "/phototest.tif", TESSDATA_DIR "_fast",
                         "eng");
 }
 
-TEST(QuickTest, NewProgressReporitng) {
+TEST(QuickTest, NewProgressReporting) {
   NewProgressTester(TESTING_DIR "/phototest.tif", TESSDATA_DIR "_fast", "eng");
 }