diff --git a/cli/cmdlineparser.cpp b/cli/cmdlineparser.cpp
index 64012af97..0578b9f7a 100644
--- a/cli/cmdlineparser.cpp
+++ b/cli/cmdlineparser.cpp
@@ -750,13 +750,13 @@ bool CmdLineParser::parseFromArgs(int argc, const char* const argv[])
             else if (std::strncmp(argv[i], "--showtime=", 11) == 0) {
                 const std::string showtimeMode = argv[i] + 11;
                 if (showtimeMode == "file")
-                    mSettings->showtime = SHOWTIME_FILE;
+                    mSettings->showtime = SHOWTIME_MODES::SHOWTIME_FILE;
                 else if (showtimeMode == "summary")
-                    mSettings->showtime = SHOWTIME_SUMMARY;
+                    mSettings->showtime = SHOWTIME_MODES::SHOWTIME_SUMMARY;
                 else if (showtimeMode == "top5")
-                    mSettings->showtime = SHOWTIME_TOP5;
+                    mSettings->showtime = SHOWTIME_MODES::SHOWTIME_TOP5;
                 else if (showtimeMode.empty())
-                    mSettings->showtime = SHOWTIME_NONE;
+                    mSettings->showtime = SHOWTIME_MODES::SHOWTIME_NONE;
                 else {
                     std::string message("cppcheck: error: unrecognized showtime mode: \"");
                     message += showtimeMode;
diff --git a/lib/cppcheck.cpp b/lib/cppcheck.cpp
index 6822e5234..9418aee3c 100644
--- a/lib/cppcheck.cpp
+++ b/lib/cppcheck.cpp
@@ -471,7 +471,7 @@ unsigned int CppCheck::checkFile(const std::string& filename, const std::string
             }
 
             Tokenizer mTokenizer(&mSettings, this);
-            if (mSettings.showtime != SHOWTIME_NONE)
+            if (mSettings.showtime != SHOWTIME_MODES::SHOWTIME_NONE)
                 mTokenizer.setTimerResults(&S_timerResults);
 
             try {
diff --git a/lib/settings.cpp b/lib/settings.cpp
index fc75cce78..ef17678b4 100644
--- a/lib/settings.cpp
+++ b/lib/settings.cpp
@@ -55,7 +55,7 @@ Settings::Settings()
       quiet(false),
       relativePaths(false),
       reportProgress(false),
-      showtime(SHOWTIME_NONE),
+      showtime(SHOWTIME_MODES::SHOWTIME_NONE),
       verbose(false),
       xml(false),
       xml_version(2)
diff --git a/lib/timer.cpp b/lib/timer.cpp
index 55b9b85cc..eec967ba6 100644
--- a/lib/timer.cpp
+++ b/lib/timer.cpp
@@ -41,7 +41,7 @@ namespace {
 
 void TimerResults::ShowResults(SHOWTIME_MODES mode) const
 {
-    if (mode == SHOWTIME_NONE)
+    if (mode == SHOWTIME_MODES::SHOWTIME_NONE)
         return;
 
     std::cout << std::endl;
@@ -55,7 +55,7 @@ void TimerResults::ShowResults(SHOWTIME_MODES mode) const
         const double sec = iter->second.seconds();
         const double secAverage = sec / (double)(iter->second.mNumberOfResults);
         overallData.mClocks += iter->second.mClocks;
-        if ((mode != SHOWTIME_TOP5) || (ordinal<=5)) {
+        if ((mode != SHOWTIME_MODES::SHOWTIME_TOP5) || (ordinal<=5)) {
             std::cout << iter->first << ": " << sec << "s (avg. " << secAverage << "s - " << iter->second.mNumberOfResults  << " result(s))" << std::endl;
         }
         ++ordinal;
@@ -71,14 +71,14 @@ void TimerResults::AddResults(const std::string& str, std::clock_t clocks)
     mResults[str].mNumberOfResults++;
 }
 
-Timer::Timer(const std::string& str, unsigned int showtimeMode, TimerResultsIntf* timerResults)
+Timer::Timer(const std::string& str, SHOWTIME_MODES showtimeMode, TimerResultsIntf* timerResults)
     : mStr(str)
     , mTimerResults(timerResults)
     , mStart(0)
     , mShowTimeMode(showtimeMode)
     , mStopped(false)
 {
-    if (showtimeMode != SHOWTIME_NONE)
+    if (showtimeMode != SHOWTIME_MODES::SHOWTIME_NONE)
         mStart = std::clock();
 }
 
@@ -89,11 +89,11 @@ Timer::~Timer()
 
 void Timer::Stop()
 {
-    if ((mShowTimeMode != SHOWTIME_NONE) && !mStopped) {
+    if ((mShowTimeMode != SHOWTIME_MODES::SHOWTIME_NONE) && !mStopped) {
         const std::clock_t end = std::clock();
         const std::clock_t diff = end - mStart;
 
-        if (mShowTimeMode == SHOWTIME_FILE) {
+        if (mShowTimeMode == SHOWTIME_MODES::SHOWTIME_FILE) {
             const double sec = (double)diff / CLOCKS_PER_SEC;
             std::cout << mStr << ": " << sec << "s" << std::endl;
         } else {
diff --git a/lib/timer.h b/lib/timer.h
index 8a3031197..7120e6a5c 100644
--- a/lib/timer.h
+++ b/lib/timer.h
@@ -26,7 +26,7 @@
 #include <map>
 #include <string>
 
-enum SHOWTIME_MODES {
+enum class SHOWTIME_MODES {
     SHOWTIME_NONE = 0,
     SHOWTIME_FILE,
     SHOWTIME_SUMMARY,
@@ -69,7 +69,7 @@ private:
 
 class CPPCHECKLIB Timer {
 public:
-    Timer(const std::string& str, unsigned int showtimeMode, TimerResultsIntf* timerResults = nullptr);
+    Timer(const std::string& str, SHOWTIME_MODES showtimeMode, TimerResultsIntf* timerResults = nullptr);
     ~Timer();
     void Stop();
 
@@ -80,7 +80,7 @@ private:
     const std::string mStr;
     TimerResultsIntf* mTimerResults;
     std::clock_t mStart;
-    const unsigned int mShowTimeMode;
+    const SHOWTIME_MODES mShowTimeMode;
     bool mStopped;
 };
 //---------------------------------------------------------------------------
diff --git a/test/testcmdlineparser.cpp b/test/testcmdlineparser.cpp
index f4932f353..6963aa381 100644
--- a/test/testcmdlineparser.cpp
+++ b/test/testcmdlineparser.cpp
@@ -893,9 +893,9 @@ private:
     void showtime() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "--showtime=summary"};
-        settings.showtime = SHOWTIME_NONE;
+        settings.showtime = SHOWTIME_MODES::SHOWTIME_NONE;
         ASSERT(defParser.parseFromArgs(2, argv));
-        ASSERT(settings.showtime == SHOWTIME_SUMMARY);
+        ASSERT(settings.showtime == SHOWTIME_MODES::SHOWTIME_SUMMARY);
     }
 
     void errorlist1() {