diff --git a/src/job.cc b/src/job.cc
index 3321ab9..833c557 100644
--- a/src/job.cc
+++ b/src/job.cc
@@ -78,9 +78,9 @@ void job::write_page_header() {
   fputs("\033E", out_);
   fprintf(out_, "\033&l%dX", std::max(1, page_params_.num_copies));
 
-  if (page_params_.duplex && page_params_.tumble) {
+  if (page_params_.duplex) {
     fputs("\033&l2S", out_);
-  } else if (page_params_.duplex) {
+  } else if (page_params_.tumble) {
     fputs("\033&l1S", out_);
   } else {
     fputs("\033&l0S", out_);