diff --git a/rebar.config b/rebar.config
index 628e738..35ddaa6 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,4 +1,6 @@
 % uncomment to disable encoding support for erlang maps
 % {jsx_nomaps, true}.
 
-{erl_opts, [{platform_define, "R15", 'no_binary_to_whatever'}]}.
\ No newline at end of file
+{erl_opts, [
+  {platform_define, "R14|R15", 'no_binary_to_whatever'}
+]}.
\ No newline at end of file