diff --git a/cli/cppcheckexecutor.cpp b/cli/cppcheckexecutor.cpp
index 3c66f59ac..88c5b0983 100644
--- a/cli/cppcheckexecutor.cpp
+++ b/cli/cppcheckexecutor.cpp
@@ -996,10 +996,10 @@ static inline std::string ansiToOEM(const std::string &msg, bool doConvert)
 void CppCheckExecutor::reportErr(const std::string &errmsg)
 {
     // Alert only about unique errors
-    if (_errorList.find(errmsg) != _errorList.end())
+    if (mShownErrors.find(errmsg) != mShownErrors.end())
         return;
 
-    _errorList.insert(errmsg);
+    mShownErrors.insert(errmsg);
     if (mErrorOutput)
         *mErrorOutput << errmsg << std::endl;
     else {
diff --git a/cli/cppcheckexecutor.h b/cli/cppcheckexecutor.h
index 6fed8829c..a41c89616 100644
--- a/cli/cppcheckexecutor.h
+++ b/cli/cppcheckexecutor.h
@@ -165,7 +165,7 @@ private:
     /**
      * Used to filter out duplicate error messages.
      */
-    std::set<std::string> _errorList;
+    std::set<std::string> mShownErrors;
 
     /**
      * Filename associated with size of file