diff --git a/README.md b/README.md
index a417d10..9560156 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,7 @@ git clone https://github.com/gnolang/tx-indexer.git
 2. **Build the binary**
 
 ```bash
+cd tx-indexer
 make build
 ```
 
@@ -104,7 +105,7 @@ A GraphQL playground is available at `/graphql`. There you have all the document
 ```graphql
 {
   transactions(
-    filter: { message: {vm_param: {add_package: {}}}}
+    filter: { messages: {vm_param: {add_package: {}}}}
   ) {
     index
     hash