diff --git a/configure.ac b/configure.ac
index e8f7ae133bd149f382d6ac33aede40f017cc9acd..f521dd91928987cc3f43521599a14c38fdab0e53 100644
--- a/configure.ac
+++ b/configure.ac
@@ -57,6 +57,7 @@ AC_CONFIG_FILES([Makefile gnu-compat/Makefile
 		 add_ons/static_condensation/demo/Makefile
 		 add_ons/static_condensation/demo/2d/Makefile
 		 add_ons/static_condensation/demo/3d/Makefile
+		 add_ons/triangle2alberta/Makefile
 		 demo/src/Makefile
 		 demo/src/1d/Makefile
 		 demo/src/2d/Makefile