diff --git a/make/projects-dir.mk b/make/projects-dir.mk
index fc724060..132af1bc 100644
--- a/make/projects-dir.mk
+++ b/make/projects-dir.mk
@@ -221,7 +221,7 @@ list-files:
 $(TEXT_FILES_CACHE):
 	$(Q)make -s text-files-update
 text-files-update:
-	make -s --no-print-directory list-files | tr '\n' '\0' | xargs -0 file -N | sed "/:.*text/I !d; s/:.*//" > $(TEXT_FILES_CACHE).tmp
+	make -s --no-print-directory list-files | tr '\n' '\0' | xargs -0 grep -d skip -Il . > $(TEXT_FILES_CACHE).tmp 2>/dev/null || true
 	mv $(TEXT_FILES_CACHE).tmp $(TEXT_FILES_CACHE)
 text-files-update-all:
 	$(Q)PROJECTS_TXT= make text-files-update