--- Makefile	2016-07-01 13:51:40.000000000 -0400
+++ Makefile	2016-10-02 12:12:22.000000000 -0400
@@ -86,7 +86,7 @@
 # Rule: test-perl - Check program syntax
 test-perl:
 	# perl-test - Check syntax
-	perl -cw $(PL_SCRIPT)
+	__PERL__ -cw $(PL_SCRIPT)
 
 # Rule: test-pod - Check POD syntax
 test-pod: