diff --git a/RepositoryModule_ooo.mk b/RepositoryModule_ooo.mk
index f06b8b0afcb3..c2d8f2a5c72d 100644
--- a/RepositoryModule_ooo.mk
+++ b/RepositoryModule_ooo.mk
@@ -98,6 +98,7 @@ $(eval $(call gb_Module_add_moduledirs,ooo,\
     sccomp \
     scripting \
     sd \
+    sdext \
     sfx2 \
     slideshow \
     smoketest \