diff --git a/lib/PeerSync.js b/lib/PeerSync.js
index 4fe2248..573c402 100644
--- a/lib/PeerSync.js
+++ b/lib/PeerSync.js
@@ -41,7 +41,7 @@ function spec() {
       },
       ];
 
-      fs.writeFileSync(this.peerdb_fn, JSON.stringify(this.peerdb));
+      fs.writeFileSync(peerdb_fn, JSON.stringify(this.peerdb));
     }
   };