diff --git a/src/plugins/qtsupport/profilereader.cpp b/src/plugins/qtsupport/profilereader.cpp
index d012acab27e..b48ce544f63 100644
--- a/src/plugins/qtsupport/profilereader.cpp
+++ b/src/plugins/qtsupport/profilereader.cpp
@@ -38,8 +38,8 @@ static QString format(const QString &fileName, int lineNo, const QString &msg)
 {
     if (lineNo > 0)
         return QString::fromLatin1("%1(%2): %3").arg(fileName, QString::number(lineNo), msg);
-    else if (lineNo)
-        return QString::fromLatin1("%1: %3").arg(fileName, msg);
+    else if (!fileName.isEmpty())
+        return QString::fromLatin1("%1: %2").arg(fileName, msg);
     else
         return msg;
 }