diff --git a/fleet/rpc.server/src/fleet/rpc/server/RpcServiceLocator.kt b/fleet/rpc.server/src/fleet/rpc/server/RpcServiceLocator.kt
index 9c68fe03163f..391a5ad3639e 100644
--- a/fleet/rpc.server/src/fleet/rpc/server/RpcServiceLocator.kt
+++ b/fleet/rpc.server/src/fleet/rpc/server/RpcServiceLocator.kt
@@ -20,7 +20,7 @@ data class ServiceImplementation(
   val serviceScope: CoroutineScope?,
 )
 
-interface RpcServiceLocator {
+fun interface RpcServiceLocator {
   fun resolve(serviceId: InstanceId): ServiceImplementation?
 }