diff --git a/tools/buildlang.sh b/tools/buildlang.sh
index f954e02c..5bd930f9 100755
--- a/tools/buildlang.sh
+++ b/tools/buildlang.sh
@@ -30,10 +30,10 @@ MARKER_TEXT="Project: $ZUUL_PROJECT Ref: $ZUUL_REFNAME Build: $ZUUL_UUID"
 # upstream-training contains the HTML and slides contents
 
 # build upstream-training slides
-sphinx-build -j $NUMBER_OF_CORES -b slides -b gettext ${DIRECTORY}/source/slides \
+sphinx-build -j $NUMBER_OF_CORES -b gettext ${DIRECTORY}/source/slides \
     ${DIRECTORY}/source/locale/
 # build upstream landing page index.html
-sphinx-build -j $NUMBER_OF_CORES -b html -b gettext ${DIRECTORY}/source/website \
+sphinx-build -j $NUMBER_OF_CORES -b gettext ${DIRECTORY}/source/website \
     ${DIRECTORY}/source/locale/
 
 # check all language translation resouce
diff --git a/tools/generatepot-training.sh b/tools/generatepot-training.sh
index 8970d2ce..2a9c858f 100755
--- a/tools/generatepot-training.sh
+++ b/tools/generatepot-training.sh
@@ -30,10 +30,10 @@ rm -f ${DIRECTORY}/source/locale/$DOCNAME.pot
 # upstream-training contains the HTML and slides contents
 
 # build upstream-training slides
-sphinx-build -j $NUMBER_OF_CORES -b slides -b gettext ${DIRECTORY}/source/slides \
+sphinx-build -j $NUMBER_OF_CORES -b gettext ${DIRECTORY}/source/slides \
     ${DIRECTORY}/source/locale/
 # build upstream landing page index.html
-sphinx-build -j $NUMBER_OF_CORES -b html -b gettext ${DIRECTORY}/source/website \
+sphinx-build -j $NUMBER_OF_CORES -b gettext ${DIRECTORY}/source/website \
     ${DIRECTORY}/source/locale/
 
 # Take care of deleting all temporary files so that