diff --git a/lfs/sdl b/lfs/sdl
index 84c395a3a..f6d7200aa 100644
--- a/lfs/sdl
+++ b/lfs/sdl
@@ -77,6 +77,7 @@ dist:
 $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	@$(PREBUILD)
 	@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar zxf $(DIR_DL)/$(DL_FILE)
+	$(UPDATE_AUTOMAKE)
 	cd $(DIR_APP) && ./configure --prefix=/usr
 	cd $(DIR_APP) && make $(MAKETUNING)
 	cd $(DIR_APP) && make install