diff --git a/core/xml_result.cpp b/core/xml_result.cpp
index aaf98ab..2e4ac7e 100644
--- a/core/xml_result.cpp
+++ b/core/xml_result.cpp
@@ -614,9 +614,10 @@ int xml_result_writer::write_adcdata_formated(FILE* out, const std::string& form
 int xml_result_writer::write_adcdata_base64(FILE* out, const adc_result* res) const {
   fprintf(out,"<adcdata samples=\"%" SIZETPRINTFLETTER "\" rate=\"%g\" channels=\"%i\">\n",res->samples,res->sampling_frequency, res->nchannels);
   unsigned int base64length=0;
-  XMLByte* base64buffer=xercesc::Base64::encode( reinterpret_cast<XMLByte*>(res->data),res->samples*res->nchannels*sizeof(short int),reinterpret_cast<XMLSize_t*>(&base64length));
+  XMLByte* base64buffer=xercesc::Base64::encode( reinterpret_cast<XMLByte*>(res->data),
+                                                 res->samples*res->nchannels*sizeof(short int),
+                                                 reinterpret_cast<XMLSize_t*>(&base64length) );
   fwrite(base64buffer,1,base64length,out);
-  delete(base64buffer);
   fprintf(out,"</adcdata>\n");
   return 0;
 }