--- tests/Makefile.in.orig	2021-01-29 05:51:02 UTC
+++ tests/Makefile.in
@@ -17,7 +17,7 @@ all:: @DO_TEST_SUITE@ test_one test_script
 test_one: $(srcdir)/test_one.in Makefile mke2fs.conf test_data.tmp
 	@echo "Creating test_one script..."
 	@[ -f test_one ] && chmod u+w test_one || true
-	@echo "#!/bin/sh" > test_one
+	@echo "#!${SHELL}" > test_one
 	@echo "HTREE=y" >> test_one
 	@echo "QUOTA=y" >> test_one
 	@echo "SRCDIR=@srcdir@" >> test_one