diff --git a/cli/cppcheckexecutor.h b/cli/cppcheckexecutor.h
index 5ef743ef20d..a063a795241 100644
--- a/cli/cppcheckexecutor.h
+++ b/cli/cppcheckexecutor.h
@@ -39,8 +39,6 @@ struct Suppressions;
  */
 class CppCheckExecutor {
 public:
-    friend class TestSuppressions;
-
     /**
      * Constructor
      */
@@ -61,17 +59,16 @@ class CppCheckExecutor {
      */
     int check(int argc, const char* const argv[]);
 
-private:
+protected:
 
     /**
      * Execute a shell command and read the output from it. Returns exitcode of the executed command,.
      */
     static int executeCommand(std::string exe, std::vector<std::string> args, std::string redirect, std::string &output_);
 
-protected:
-
     static bool reportUnmatchedSuppressions(const Settings &settings, const SuppressionList& suppressions, const std::list<FileWithDetails> &files, const std::list<FileSettings>& fileSettings, ErrorLogger& errorLogger);
 
+private:
     /**
      * Wrapper around check_internal
      *   - installs optional platform dependent signal handling
diff --git a/test/testsuppressions.cpp b/test/testsuppressions.cpp
index 58ee72f28b3..61bb0f9cc1a 100644
--- a/test/testsuppressions.cpp
+++ b/test/testsuppressions.cpp
@@ -46,6 +46,11 @@ class TestSuppressions : public TestFixture {
 
 private:
 
+    class CppCheckExecutorTest final : public CppCheckExecutor
+    {
+        friend class TestSuppressions;
+    };
+
     const std::string templateFormat{"{callstack}: ({severity}) {inconclusive:inconclusive: }{message}"};
 
     void run() override {
@@ -289,7 +294,7 @@ class TestSuppressions : public TestFixture {
         SingleExecutor executor(cppCheck, filelist, fileSettings, settings, supprs, *this, nullptr);
         unsigned int exitCode = executor.check();
 
-        const bool err = CppCheckExecutor::reportUnmatchedSuppressions(settings, supprs.nomsg, filelist, fileSettings, *this);
+        const bool err = CppCheckExecutorTest::reportUnmatchedSuppressions(settings, supprs.nomsg, filelist, fileSettings, *this);
         if (err && exitCode == 0)
             exitCode = 1;
 
@@ -335,10 +340,10 @@ class TestSuppressions : public TestFixture {
         if (useFS)
             filelist.clear();
 
-        ThreadExecutor executor(filelist, fileSettings, settings, supprs, *this, nullptr, CppCheckExecutor::executeCommand);
+        ThreadExecutor executor(filelist, fileSettings, settings, supprs, *this, nullptr, CppCheckExecutorTest::executeCommand);
         unsigned int exitCode = executor.check();
 
-        const bool err = CppCheckExecutor::reportUnmatchedSuppressions(settings, supprs.nomsg, filelist, fileSettings, *this);
+        const bool err = CppCheckExecutorTest::reportUnmatchedSuppressions(settings, supprs.nomsg, filelist, fileSettings, *this);
         if (err && exitCode == 0)
             exitCode = 1;
 
@@ -385,10 +390,10 @@ class TestSuppressions : public TestFixture {
         if (useFS)
             filelist.clear();
 
-        ProcessExecutor executor(filelist, fileSettings, settings, supprs, *this, nullptr, CppCheckExecutor::executeCommand);
+        ProcessExecutor executor(filelist, fileSettings, settings, supprs, *this, nullptr, CppCheckExecutorTest::executeCommand);
         unsigned int exitCode = executor.check();
 
-        const bool err = CppCheckExecutor::reportUnmatchedSuppressions(settings, supprs.nomsg, filelist, fileSettings, *this);
+        const bool err = CppCheckExecutorTest::reportUnmatchedSuppressions(settings, supprs.nomsg, filelist, fileSettings, *this);
         if (err && exitCode == 0)
             exitCode = 1;
 
@@ -1534,7 +1539,7 @@ class TestSuppressions : public TestFixture {
         // No unmatched suppression
         {
             SuppressionList suppressions;
-            ASSERT_EQUALS(false, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(false, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("", errout_str());
         }
 
@@ -1543,7 +1548,7 @@ class TestSuppressions : public TestFixture {
             SuppressionList suppressions;
             addCheckedSuppression(suppressions, {"abc", "a.c", 10U});
             addCheckedSuppression(suppressions, {"unmatchedSuppression", "*", SuppressionList::Suppression::NO_LINE});
-            ASSERT_EQUALS(false, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(false, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("", errout_str());
         }
 
@@ -1552,7 +1557,7 @@ class TestSuppressions : public TestFixture {
             SuppressionList suppressions;
             addCheckedSuppression(suppressions, {"abc", "a.c", 10U});
             addCheckedSuppression(suppressions, {"unmatchedSuppression", "", SuppressionList::Suppression::NO_LINE});
-            ASSERT_EQUALS(false, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(false, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("", errout_str());
         }
 
@@ -1561,7 +1566,7 @@ class TestSuppressions : public TestFixture {
             SuppressionList suppressions;
             addCheckedSuppression(suppressions, {"abc", "a.c", 10U});
             addCheckedSuppression(suppressions, {"unmatchedSuppression", "a.c", SuppressionList::Suppression::NO_LINE});
-            ASSERT_EQUALS(false, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(false, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("", errout_str());
         }
 
@@ -1570,7 +1575,7 @@ class TestSuppressions : public TestFixture {
             SuppressionList suppressions;
             addCheckedSuppression(suppressions, {"abc", "a.c", 10U});
             addCheckedSuppression(suppressions, {"unmatchedSuppression", "a.c", 10U});
-            ASSERT_EQUALS(false, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(false, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("", errout_str());
         }
 
@@ -1579,7 +1584,7 @@ class TestSuppressions : public TestFixture {
             SuppressionList suppressions;
             addCheckedSuppression(suppressions, {"abc", "a.c", 10U});
             addCheckedSuppression(suppressions, {"unmatchedSuppression", "b.c", SuppressionList::Suppression::NO_LINE});
-            ASSERT_EQUALS(true, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(true, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("[a.c:10:0]: (information) Unmatched suppression: abc [unmatchedSuppression]\n", errout_str());
         }
 
@@ -1588,7 +1593,7 @@ class TestSuppressions : public TestFixture {
             SuppressionList suppressions;
             addCheckedSuppression(suppressions, {"abc", "a.c", 10U});
             addCheckedSuppression(suppressions, {"unmatchedSuppression", "a.c", 1U});
-            ASSERT_EQUALS(true, CppCheckExecutor::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
+            ASSERT_EQUALS(true, CppCheckExecutorTest::reportUnmatchedSuppressions(settingsDefault, suppressions, files, fs, *this));
             ASSERT_EQUALS("[a.c:10:0]: (information) Unmatched suppression: abc [unmatchedSuppression]\n", errout_str());
         }
     }