diff --git a/Makefile b/Makefile
index 8754db1..6cc2648 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@ clean:
 	rm -f docs/all.md
 
 test:
-	@$(ZSH) -fc 'echo $$ZSH_PATCHLEVEL'
+	@$(ZSH) -fc 'echo ZSH_PATCHLEVEL=$$ZSH_PATCHLEVEL'
 	@result=0; \
 	for test in highlighters/*; do \
 		if [ -d $$test/test-data ]; then \