diff --git a/unittests/test-contracts/README.md b/unittests/test-contracts/README.md
index 157455c7202..aa9c0f8dee9 100644
--- a/unittests/test-contracts/README.md
+++ b/unittests/test-contracts/README.md
@@ -2,6 +2,6 @@ test_ram_limit contract was compiled with eosio.cdt v1.4.1
 
 That contract was ported to compile with eosio.cdt v1.5.0, but the test that uses it is very sensitive to stdlib/eosiolib changes, compilation flags and linker flags.
 
-deferred_test contract was compiled with eosio.cdt v1.6.1
+deferred_test and proxy contracts were compiled with eosio.cdt v1.6.1
 
 The remaining contracts have been ported to compile with eosio.cdt v1.6.x. They were compiled with a patched version of eosio.cdt v1.6.0-rc1 (commit 1c9180ff5a1e431385180ce459e11e6a1255c1a4).
diff --git a/unittests/test-contracts/proxy/proxy.cpp b/unittests/test-contracts/proxy/proxy.cpp
index 1a199c4a5ba..c9fc324cad5 100644
--- a/unittests/test-contracts/proxy/proxy.cpp
+++ b/unittests/test-contracts/proxy/proxy.cpp
@@ -59,6 +59,7 @@ void proxy::on_error( uint128_t sender_id, eosio::ignore<std::vector<char>> ) {
    get_datastream() >> packed_trx_size;
    transaction trx;
    get_datastream() >> trx;
+   trx.transaction_extensions.clear();
 
    trx.delay_sec = cfg.delay;
    trx.send( id, get_self() );
diff --git a/unittests/test-contracts/proxy/proxy.wasm b/unittests/test-contracts/proxy/proxy.wasm
index c09311385be..b40249782ba 100755
Binary files a/unittests/test-contracts/proxy/proxy.wasm and b/unittests/test-contracts/proxy/proxy.wasm differ