Small graphs in latex output

The graphs in the latex output are very small.
Unreadable sometimes.

I looked at the code that generates the latex for the graphs.
I found this code in dot.cpp line 1959

      if (width>maxWidth)
       {
         out << "\\includegraphics[width=" << maxWidth << "pt]";
       }
       else if (height>maxHeight)
       {
         out << "\\includegraphics[height=" << maxHeight << "pt]";
       }
       else
       {
         out << "\\includegraphics[width=" << width/2 << "pt]";
       }
       out << "{" << baseName << "}\n"
         "\\end{center}\n"
         "\\end{figure}\n";

My question is in the else case why is width divided by 2?
Beceause in my output if i would double the points (so get the width  
value back) al the pictures have a nice size.

My question is: is this a bug in the latex output?
Do i have to compile my own doxygen to fix this?
Or is there a other way to specify the width of the pictures in the  
latex output that i couldn't find?

Greetings

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