diff --git a/test/RPCSession.cpp b/test/RPCSession.cpp
index 608481189..1d685bf1b 100644
--- a/test/RPCSession.cpp
+++ b/test/RPCSession.cpp
@@ -326,6 +326,14 @@ Json::Value RPCSession::rpcCall(string const& _methodName, vector<string> const&
 	if (!jsonParseStrict(reply, result, &errorMsg))
 		BOOST_REQUIRE_MESSAGE(false, errorMsg);
 
+	if (!result.isMember("id") || !result["id"].isUInt())
+		BOOST_FAIL("Badly formatted JSON-RPC response (missing or non-integer \"id\")");
+	if (result["id"].asUInt() != (m_rpcSequence - 1))
+		BOOST_FAIL(
+			"Response identifier mismatch. "
+			"Expected " + to_string(m_rpcSequence - 1) + " but got " + to_string(result["id"].asUInt()) + "."
+		);
+
 	if (result.isMember("error"))
 	{
 		if (_canFail)