diff --git a/scripts/geth_genesis.json b/scripts/geth_genesis.json
index 2bc2d4aa5c..9960dc6ab5 100644
--- a/scripts/geth_genesis.json
+++ b/scripts/geth_genesis.json
@@ -1,6 +1,6 @@
 {
 	  "config": {
-		    "chainId":1,
+		    "chainId":9999,
 		    "homesteadBlock":0,
 		    "eip150Block":0,
 		    "eip155Block":0,