diff --git a/substrate/bin/node/runtime/src/lib.rs b/substrate/bin/node/runtime/src/lib.rs
index 3b7fcb19c3..679bad2371 100644
--- a/substrate/bin/node/runtime/src/lib.rs
+++ b/substrate/bin/node/runtime/src/lib.rs
@@ -125,7 +125,7 @@ impl frame_system::Trait for Runtime {
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = Version;
-	type ModuleToIndex = ();
+	type ModuleToIndex = ModuleToIndex;
 }
 
 parameter_types! {