diff --git a/testutil/network/network.go b/testutil/network/network.go
index 3bd8efe78529..c335a78d3b69 100644
--- a/testutil/network/network.go
+++ b/testutil/network/network.go
@@ -143,6 +143,7 @@ func DefaultConfigWithAppConfig(appConfig depinject.Config) (Config, error) {
 	)
 
 	if err := depinject.Inject(appConfig,
+		&appBuilder,
 		&txConfig,
 		&cdc,
 		&legacyAmino,