diff --git a/common/rfb/JpegCompressor.cxx b/common/rfb/JpegCompressor.cxx
index 5df0039..c8bf841 100644
--- a/common/rfb/JpegCompressor.cxx
+++ b/common/rfb/JpegCompressor.cxx
@@ -94,7 +94,7 @@
   JPEG_DEST_MGR *dest = (JPEG_DEST_MGR *)cinfo->dest;
   JpegCompressor *jc = dest->instance;
 
-  jc->setptr(dest->pub.next_output_byte);
+  jc->setptr(jc->getend());
   jc->overrun(jc->getend() - jc->getstart(), 1);
   dest->pub.next_output_byte = jc->getptr();
   dest->pub.free_in_buffer = jc->getend() - jc->getptr();