Bruteforce and matching giving reverse results. Why?

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I've been making an application where 2 images can be compared (2 pictures on my smartphone). There I use a FAST detector and FREAK descriptor on a limited amount of keypoints (i filtered out the 300 best ones according to the response). When I try to match it with BRUTEFORCE_HAMMING, it gives back 0 matches.

Matching happens with

    MatOfDMatch matches = new MatOfDMatch();

    matcher = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMING);
    matcher.match(descriptors,descriptors1,matches);
    MatOfDMatch goedematches = new MatOfDMatch();

    double max_dist = 0;
    double min_dist = 100;
    //if (descriptors.cols() == descriptors1.cols())
    //{
    for( int i = 0; i < descriptors.rows(); i++ )
    { double dist = matches.toArray()[i].distance;
      if( dist < min_dist ) min_dist = dist;
      if( dist > max_dist ) max_dist = dist;
    }
    // should only draw good matches
   for( int i = 0; i < descriptors.rows(); i++ )
    {  MatOfDMatch temp = new MatOfDMatch();
       if( matches.toArray()[i].distance < 2*min_dist )
       {   temp.fromArray(matches.toArray()[i]);
           goedematches.push_back(temp); 
           }        
   // }
    }

   Log.d("LOG!", "Number of good matches= " + goedematches.size());

When I compare the image to itself, I get the following output. The output is 0x0 good matches.

05-02 15:52:30.325: D/LOG!(17866): Number of Descriptors image 1= 64x286
05-02 15:52:30.325: D/LOG!(17866): Number of Descriptors image 2= 64x286
05-02 15:52:30.325: D/LOG!(17866): description time elapsed 339 ms
05-02 15:52:30.555: D/LOG!(17866): Minimum distance = 0.0
05-02 15:52:30.560: D/LOG!(17866): Maximum distance= 0.0
05-02 15:52:30.560: D/LOG!(17866): Number of good matches= 0x0

When I use the same picture and one that has nothing to do with it, I get about 471 matches. There is something wrong inside the code, but I can't seem to see what's wrong (the code seems to reserve, cause everything that is the same isn't matched, and it's matched when it's completely different. Where is the code am I doing it wrong?)

IMPORTANT: Don't mind the red dots on the right picture, it's just an old picture I took when I drew the keypoints on the screen. It does not stand for the matching itself! It could be any other picture that has nothing to do with the first image.

05-02 16:03:06.120: D/LOG!(19025): Number of Descriptors image 1= 64x259
05-02 16:03:06.120: D/LOG!(19025): Number of Descriptors image 2= 64x286
05-02 16:03:06.420: D/LOG!(19025): Minimum distance= 93.0
05-02 16:03:06.420: D/LOG!(19025): Maximum distance = 183.0
05-02 16:03:06.420: D/LOG!(19025): Number of good matches= 1x286

This Question has been posted on Stackoverflow as well.