diff --git a/aqua/misc.aqua b/aqua/misc.aqua
index b7a8ba4..0614c0f 100644
--- a/aqua/misc.aqua
+++ b/aqua/misc.aqua
@@ -1,5 +1,7 @@
 import "trust-graph.aqua"
 
+alias Error: string
+
 -- helpers for isFluencePeer
 service TrustOp("op"):
   array_length(a: []Trust) -> u32
diff --git a/aqua/trust-graph-api.aqua b/aqua/trust-graph-api.aqua
index fa3fbe2..9872ee2 100644
--- a/aqua/trust-graph-api.aqua
+++ b/aqua/trust-graph-api.aqua
@@ -1,8 +1,7 @@
-import Sig, Peer from "@fluencelabs/aqua-lib/builtin.aqua"
+import Sig, Peer, PeerId from "@fluencelabs/aqua-lib/builtin.aqua"
 import "misc.aqua"
 import "trust-graph.aqua"
 
-alias PeerId: string
 alias Error: string
 
 -- Call context: any node with registered `trust-graph` service