diff --git a/lib/indexer/addrindexer.js b/lib/indexer/addrindexer.js
index 92531591..10b85006 100644
--- a/lib/indexer/addrindexer.js
+++ b/lib/indexer/addrindexer.js
@@ -218,7 +218,7 @@ class AddrIndexer extends Indexer {
       limit = this.maxTxs;
 
     if (limit > this.maxTxs)
-      throw new Error('Limit above max of ${this.maxTxs}.');
+      throw new Error(`Limit above max of ${this.maxTxs}.`);
 
     const hash = Address.getHash(addr);
     const prefix = addr.getPrefix(this.network);