diff --git a/bridges/bin/millau/runtime/src/lib.rs b/bridges/bin/millau/runtime/src/lib.rs
index 8217967020..7d493d8493 100644
--- a/bridges/bin/millau/runtime/src/lib.rs
+++ b/bridges/bin/millau/runtime/src/lib.rs
@@ -150,7 +150,7 @@ parameter_types! {
 		read: 60_000_000, // ~0.06 ms = ~60 µs
 		write: 200_000_000, // ~0.2 ms = 200 µs
 	};
-	pub const SS58Prefix: u8 = 86;
+	pub const SS58Prefix: u8 = 60;
 }
 
 impl frame_system::Config for Runtime {
diff --git a/bridges/bin/rialto/runtime/src/lib.rs b/bridges/bin/rialto/runtime/src/lib.rs
index 4881dea298..52344cd27e 100644
--- a/bridges/bin/rialto/runtime/src/lib.rs
+++ b/bridges/bin/rialto/runtime/src/lib.rs
@@ -158,7 +158,7 @@ parameter_types! {
 		read: 60_000_000, // ~0.06 ms = ~60 µs
 		write: 200_000_000, // ~0.2 ms = 200 µs
 	};
-	pub const SS58Prefix: u8 = 84;
+	pub const SS58Prefix: u8 = 48;
 }
 
 impl frame_system::Config for Runtime {