--- docbook-utils/backends/man.in
+++ docbook-utils/backends/man.in
@@ -7,7 +7,7 @@ HELPER=$SGML_BASE_DIR/docbook/utils-@VERSION@/helpers/docbook2man-spec.pl
 TMPDIR=`mktemp -d /tmp/man.XXXXXX` || \
  { echo >&2 "man backend: could not create secure temporary directory"; exit 1;}
 trap 'rm -rf "${TMPDIR}"' EXIT
-nsgmls "$SGML_FILE" > "${TMPDIR}/nsgmls.tmp"
+nsgmls $SGML_INCLUDE "$SGML_FILE" > "${TMPDIR}/nsgmls.tmp"
 sgmlspl $HELPER <"${TMPDIR}/nsgmls.tmp" 2>"${TMPDIR}/errs"
 if [ $? -ne 0 ]
 then
--- docbook-utils/bin/jw.in
+++ docbook-utils/bin/jw.in
@@ -423,7 +423,7 @@ echo "Using catalogs: `echo $SGML_CATALOG_FILES | sed 's/:/, /g'`"
 echo "Using stylesheet: $SGML_STYLESHEET"
 echo "Working on: $SGML_FILE"
 cd "$SGML_OUTPUT_DIRECTORY"
-export SGML_JADE SGML_FILE_NAME SGML_ARGUMENTS
+export SGML_JADE SGML_FILE_NAME SGML_ARGUMENTS SGML_INCLUDE
 export SGML_CATALOG_FILES SGML_BASE_DIR SGML_FILE SGML_STYLESHEET
 NOCHUNKS=`echo $SGML_OPTIONS | grep nochunks`
 if [ -z "$NOCHUNKS" ]