diff --git a/repos/ports/src/noux-pkg/make/target.mk b/repos/ports/src/noux-pkg/make/target.mk
index a07febe1b..080df684f 100644
--- a/repos/ports/src/noux-pkg/make/target.mk
+++ b/repos/ports/src/noux-pkg/make/target.mk
@@ -3,4 +3,11 @@
 #
 CPPFLAGS += -D__FreeBSD__
 
+#
+# Avoid aliasing with libc symbols to prevent the dynamic linker from
+# resolving libc-internal references to the make binary, which causes
+# trouble for fork/execve.
+#
+CPPFLAGS += $(foreach S, optarg optind opterr optopt, -D$S=mk_$S)
+
 include $(call select_from_repositories,mk/noux.mk)