diff --git a/net.cpp b/net.cpp
index 2ecfafb82..7ba2d8a12 100644
--- a/net.cpp
+++ b/net.cpp
@@ -153,7 +153,7 @@ BOOST_AUTO_TEST_CASE(badPingNodePacket)
 
 	PingNode p((bi::udp::endpoint()));
 	BOOST_REQUIRE_NO_THROW(p = PingNode::fromBytesConstRef(bi::udp::endpoint(), bytesConstRef(&s.out())));
-	BOOST_REQUIRE(p.version = 0);
+	BOOST_REQUIRE(p.version == 0);
 }
 
 BOOST_AUTO_TEST_CASE(test_neighbours_packet)