diff --git a/ethcore/light/src/net/tests/mod.rs b/ethcore/light/src/net/tests/mod.rs
index 7a159b6a4..6e2bc9f33 100644
--- a/ethcore/light/src/net/tests/mod.rs
+++ b/ethcore/light/src/net/tests/mod.rs
@@ -64,6 +64,10 @@ impl IoContext for Expect {
 	fn disable_peer(&self, peer: PeerId) {
 		assert_eq!(self, &Expect::Punish(peer));
 	}
+
+	fn protocol_version(&self, _peer: PeerId) -> Option<u8> {
+		Some(super::MAX_PROTOCOL_VERSION)
+	}
 }
 
 // can't implement directly for Arc due to cross-crate orphan rules.
diff --git a/scripts/targets.sh b/scripts/targets.sh
index 529937c23..505875336 100644
--- a/scripts/targets.sh
+++ b/scripts/targets.sh
@@ -17,4 +17,5 @@ export TARGETS="
 	-p ethcore-ipc \
 	-p ethcore-ipc-tests \
 	-p ethcore-ipc-nano \
+	-p ethcore-light \
 	-p parity"