diff --git a/bin/sh/tests/execution/func1.0 b/bin/sh/tests/execution/func1.0
--- a/bin/sh/tests/execution/func1.0
+++ b/bin/sh/tests/execution/func1.0
@@ -1,3 +1,3 @@
 
-MALLOC_OPTIONS=J ${SH} -c 'g() { g() { :; }; :; }; g' &&
-MALLOC_OPTIONS=J ${SH} -c 'g() { unset -f g; :; }; g'
+MALLOC_CONF=junk:true ${SH} -c 'g() { g() { :; }; :; }; g' &&
+MALLOC_CONF=junk:true ${SH} -c 'g() { unset -f g; :; }; g'
diff --git a/tools/regression/bpf/bpf_filter/Makefile b/tools/regression/bpf/bpf_filter/Makefile
--- a/tools/regression/bpf/bpf_filter/Makefile
+++ b/tools/regression/bpf/bpf_filter/Makefile
@@ -63,7 +63,7 @@
 .if defined(BPF_BENCHMARK)
 	@-time ${.CURDIR}/${TEST}
 .else
-	@-env MALLOC_OPTIONS=J ${.CURDIR}/${TEST}
+	@-env MALLOC_CONF=junk:true ${.CURDIR}/${TEST}
 .endif
 	@rm -f ${.CURDIR}/${TEST}
 .endfor