diff --git a/rebar.config b/rebar.config
index b6afda498..2e0220633 100644
--- a/rebar.config
+++ b/rebar.config
@@ -93,6 +93,8 @@
 	    {if_have_fun, {crypto, strong_rand_bytes, 1}, {d, 'STRONG_RAND_BYTES'}},
 	    {if_have_fun, {gb_sets, iterator_from, 2}, {d, 'GB_SETS_ITERATOR_FROM'}},
 	    {if_have_fun, {public_key, short_name_hash, 1}, {d, 'SHORT_NAME_HASH'}},
+	    %% {if_have_fun, {public_key, generate_key, 1}, {d, 'GENERATE_RSA_KEY'}},
+	    {if_version_above, "19", {d, 'GENERATE_RSA_KEY'}},
             {if_var_true, hipe, native},
             {src_dirs, [asn1, src,
                         {if_var_true, tools, tools},