diff --git a/make/projects-dir.mk b/make/projects-dir.mk
index 4cb2dc97..6f4c87d2 100644
--- a/make/projects-dir.mk
+++ b/make/projects-dir.mk
@@ -370,8 +370,10 @@ clean.text-files-cache:
 $(TEXT_FILES_CACHE):
 	@make text-files-update
 text-files-update:
-	@make --no-print-directory list-files | xargs file -N | grep ":.*text" | cut -d: -f1 | tee $(TEXT_FILES_CACHE).tmp
+	@make --no-print-directory list-files | xargs file -N | grep ":.*text" | cut -d: -f1 > $(TEXT_FILES_CACHE).tmp
 	mv $(TEXT_FILES_CACHE).tmp $(TEXT_FILES_CACHE)
+text-files-update-all:
+	@PROJECTS_TXT= make text-files-update
 text-files-list list-text-files: | $(TEXT_FILES_CACHE)
 	@cat $(TEXT_FILES_CACHE)