diff --git a/povray_wasm/build_ubuntu.sh b/povray_wasm/build_ubuntu.sh
index c8361c6..723f4c3 100644
--- a/povray_wasm/build_ubuntu.sh
+++ b/povray_wasm/build_ubuntu.sh
@@ -30,7 +30,7 @@ CONFIG_ARGS=(
 
 ARGS=(
 	--with-boost-libdir=${BOOST_ROOT}
-	#LIBS="-lboost_system -lboost_thread -lboost_date_time"
+	LIBS="-lboost_system -lboost_thread -lboost_date_time"
 	COMPILED_BY="$NAME <$EMAIL>"
 	CC=emcc
 	CXX=em++