diff --git a/gdcm-2.0.18-charls.patch b/gdcm-2.0.18-charls.patch
index 61de90e..d67f1a5 100644
--- a/gdcm-2.0.18-charls.patch
+++ b/gdcm-2.0.18-charls.patch
@@ -1,6 +1,6 @@
 diff -up gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx.charls gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx
 --- gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx.charls	2011-06-29 01:08:45.000000000 -0600
-+++ gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx	2011-11-02 08:59:23.582956059 -0600
++++ gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx	2011-11-02 09:15:59.630494712 -0600
 @@ -17,8 +17,7 @@
  
  #include <fstream>
@@ -23,7 +23,7 @@ diff -up gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx.charls gdcm-2.0.18/Example
    if (JpegLsReadHeader(buffer, totalLen, &metadata) != OK)
      {
      std::cerr << "Cant parse jpegls" << std::endl;
-@@ -156,7 +159,11 @@ int main(int argc, char *argv[])
+@@ -156,15 +159,24 @@ int main(int argc, char *argv[])
    const char *pbyteCompressed = &vbuffer[0];
    unsigned int cbyteCompressed = vbuffer.size(); // updated legnth
  
@@ -35,3 +35,16 @@ diff -up gdcm-2.0.18/Examples/Cxx/FixJAIBugJPEGLS.cxx.charls gdcm-2.0.18/Example
    JpegLsReadHeader(pbyteCompressed, cbyteCompressed, &params);
  
    std::vector<BYTE> rgbyteOut;
+   //rgbyteOut.resize( image.GetBufferLength() );
+   rgbyteOut.resize(params.height *params.width * ((params.bitspersample + 7) / 8) * params.components);
+ 
++#ifdef GDCM_USE_SYSTEM_CHARLS
++  JLS_ERROR result =
++    JpegLsDecode(&rgbyteOut[0], rgbyteOut.size(), pbyteCompressed, cbyteCompressed, &params );
++#else
+   JLS_ERROR result =
+     JpegLsDecode(&rgbyteOut[0], rgbyteOut.size(), pbyteCompressed, cbyteCompressed );
++#endif
+   if (result != OK)
+     {
+     std::cerr << "Could not patch JAI-JPEGLS" << std::endl;