diff --git a/rpc/http.go b/rpc/http.go
index 518b3b874f..e8f2cfda77 100644
--- a/rpc/http.go
+++ b/rpc/http.go
@@ -36,7 +36,7 @@ import (
 )
 
 const (
-	maxRequestContentLength = 1024 * 512
+	maxRequestContentLength = 1024 * 1024 * 5
 	contentType             = "application/json"
 )