diff --git a/cli/cppcheckexecutor.cpp b/cli/cppcheckexecutor.cpp
index 249ad06b6..d6ed1f20a 100644
--- a/cli/cppcheckexecutor.cpp
+++ b/cli/cppcheckexecutor.cpp
@@ -1035,11 +1035,6 @@ static inline std::string ansiToOEM(const std::string &msg, bool doConvert)
 
 void CppCheckExecutor::reportErr(const std::string &errmsg)
 {
-    // Alert only about unique errors
-    if (mShownErrors.find(errmsg) != mShownErrors.end())
-        return;
-
-    mShownErrors.insert(errmsg);
     if (mErrorOutput)
         *mErrorOutput << errmsg << std::endl;
     else {
@@ -1096,11 +1091,17 @@ void CppCheckExecutor::reportErr(const ErrorMessage &msg)
 {
     if (mShowAllErrors) {
         reportOut(msg.toXML());
-    } else if (mSettings->xml) {
-        reportErr(msg.toXML());
-    } else {
-        reportErr(msg.toString(mSettings->verbose, mSettings->templateFormat, mSettings->templateLocation));
+        return;
     }
+
+    // Alert only about unique errors
+    if (!mShownErrors.insert(msg.toString(mSettings->verbose)).second)
+        return;
+
+    if (mSettings->xml)
+        reportErr(msg.toXML());
+    else
+        reportErr(msg.toString(mSettings->verbose, mSettings->templateFormat, mSettings->templateLocation));
 }
 
 void CppCheckExecutor::bughuntingReport(const std::string &str)