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();
 }
 // }}}