1 files changed, 3 insertions, 0 deletions
diff --git a/dmydln.c b/dmydln.c
index b1516937d3..35824ebec8 100644
--- a/dmydln.c
+++ b/dmydln.c
@@ -1,3 +1,6 @@
+// This file is used by miniruby, not ruby.
+// ruby uses dln.c.
+
 #include "ruby/ruby.h"
 
 NORETURN(void *dln_load(const char *));