diff --git a/fuzz/src/chanmon_consistency.rs b/fuzz/src/chanmon_consistency.rs
index b0703d8e6ed..273af2a021f 100644
--- a/fuzz/src/chanmon_consistency.rs
+++ b/fuzz/src/chanmon_consistency.rs
@@ -1866,7 +1866,7 @@ impl PaymentTracker {
 				}],
 				blinded_tail: None,
 			}],
-			route_params: route_params.clone(),
+			route_params,
 		};
 		let onion = RecipientOnionFields::secret_only(secret, amt);
 		let res = source.send_payment_with_route(route, hash, onion, id);
@@ -1946,7 +1946,7 @@ impl PaymentTracker {
 				],
 				blinded_tail: None,
 			}],
-			route_params: route_params.clone(),
+			route_params,
 		};
 		let onion = RecipientOnionFields::secret_only(secret, amt);
 		let res = source.send_payment_with_route(route, hash, onion, id);
diff --git a/lightning/src/ln/outbound_payment.rs b/lightning/src/ln/outbound_payment.rs
index 105ee355a9e..20b594a1e83 100644
--- a/lightning/src/ln/outbound_payment.rs
+++ b/lightning/src/ln/outbound_payment.rs
@@ -1922,9 +1922,6 @@ impl OutboundPayments {
 			}))
 		}
 
-		// `route_params` is a required field, but is unused when sending a probe along a fixed
-		// path. Construct dummy parameters from the path, leaving the fee budget unset to match
-		// the previous behavior of not tracking one for probes.
 		let route_params = {
 			let last_hop = path.hops.last().unwrap();
 			let payment_params =
@@ -1932,7 +1929,7 @@ impl OutboundPayments {
 			RouteParameters {
 				payment_params,
 				final_value_msat: path.final_value_msat(),
-				max_total_routing_fee_msat: None,
+				max_total_routing_fee_msat: Some(path.fee_msat()),
 			}
 		};
 		let route = Route { paths: vec![path], route_params };