--- a/tests/Makefile	Sun Nov 30 14:33:19 2025 +0100
+++ b/tests/Makefile	Sun Nov 30 14:40:39 2025 +0100
@@ -49,7 +49,7 @@
 	test -f "$@"
 
 $(TEST_DIR):
-	$(MKDIR) $@
+	$(MKDIR) $@/
 
 FORCE: