diff --git a/filter/pdftopdf/qpdf_pdftopdf_processor.cc b/filter/pdftopdf/qpdf_pdftopdf_processor.cc

index 73e4f06..0752a99 100644

--- a/filter/pdftopdf/qpdf_pdftopdf_processor.cc

+++ b/filter/pdftopdf/qpdf_pdftopdf_processor.cc

@@ -623,6 +623,7 @@ void QPDF_PDFTOPDF_Processor::emitFile(FILE *f,ArgOwnership take) // {{{

   if (!extraheader.empty()) {

     out.setExtraHeaderText(extraheader);

   }

+  out.setPreserveEncryption(false);

   out.write();

 }

 // }}}

@@ -642,6 +643,7 @@ void QPDF_PDFTOPDF_Processor::emitFilename(const char *name) // {{{

   if (!extraheader.empty()) {

     out.setExtraHeaderText(extraheader);

   }

+  out.setPreserveEncryption(false);

   out.write();

 }

 // }}}