diff --git a/tools/generatepot-rst.sh b/tools/generatepot-rst.sh
index e3184842..28888629 100755
--- a/tools/generatepot-rst.sh
+++ b/tools/generatepot-rst.sh
@@ -35,7 +35,7 @@ rm $DOCNAME/source/locale/common.pot
 # Take care of deleting all temporary files so that git add
 # doc/$DOCNAME/source/locale will only add the single pot file.
 # Remove UUIDs, those are not necessary and change too often
-msgcat --sort-output $DOCNAME/source/locale/*.pot | \
+msgcat --sort-by-file $DOCNAME/source/locale/*.pot | \
   awk '$0 !~ /^\# [a-z0-9]+$/' > $DOCNAME/source/$DOCNAME.pot
 rm  $DOCNAME/source/locale/*.pot
 rm -rf $DOCNAME/source/locale/.doctrees/