Solved: error: no match for call to '(QString) (QString&)' when emitting signal in Qt

I had an annoyning error message:
error: no match for call to '(QString) (QString&)'
when compiling my qt application.

Took some time before I found what was wrong, the code looked like this:
QString newValue=QString::number(value,'g',1);

if(newValue != value_)
{
    value_ = newValue;
    emit newValue(value_);
}


The error is that the signal name is the same as the variable:
QString newValue=QString::number(value,'g',1);

if(newValue != value_)
{
    value_ = newValue;
    emit newValue(value_);
}

So the fix is easy, changed the signal name:
QString newValue=QString::number(value,'g',1);

if(newValue != value_)
{
    value_ = newValue;
    emit updateValue(value_);
}