diff --git a/test/RPCSession.cpp b/test/RPCSession.cpp
index f67696d96..43f10824c 100644
--- a/test/RPCSession.cpp
+++ b/test/RPCSession.cpp
@@ -75,6 +75,8 @@ IPCSocket::IPCSocket(string const& _path): m_path(_path)
 		BOOST_FAIL("Error connecting to IPC socket: " << _path);
 
 	m_fp = fdopen(m_socket, "r");
+	if (!m_fp)
+		BOOST_FAIL("Error opening IPC socket: " << _path);
 #endif
 }