diff --git a/substrate/client/network/src/protocol/generic_proto/behaviour.rs b/substrate/client/network/src/protocol/generic_proto/behaviour.rs
index 88c2791ce4..4ae8b8b98a 100644
--- a/substrate/client/network/src/protocol/generic_proto/behaviour.rs
+++ b/substrate/client/network/src/protocol/generic_proto/behaviour.rs
@@ -914,11 +914,11 @@ impl GenericProto {
 				error!(target: "sub-libp2p", "PSM => Drop({}, {:?}): Not enabled (Incoming).",
 					entry.key().0, set_id);
 				*entry.into_mut() = st;
-				debug_assert!(!false);
+				debug_assert!(false);
 			},
 			PeerState::Poisoned => {
 				error!(target: "sub-libp2p", "State of {:?} is poisoned", entry.key());
-				debug_assert!(!false);
+				debug_assert!(false);
 			},
 		}
 	}