diff --git a/typescript/src/schema/proto.ts b/typescript/src/schema/proto.ts
index a499a040c..db0beba2d 100644
--- a/typescript/src/schema/proto.ts
+++ b/typescript/src/schema/proto.ts
@@ -480,8 +480,8 @@ function augmentService(
                   service.name +
                   ' message ' +
                   property +
-                  ' refers to an unkown resource: ' +
-                  resourceReference
+                  ' refers to an unknown resource: ' +
+                  JSON.stringify(resourceReference)
               );
               continue;
             }