diff --git a/ci/prepare_gtest_network.sh b/ci/prepare_gtest_network.sh
index 99f8266..1159627 100644
--- a/ci/prepare_gtest_network.sh
+++ b/ci/prepare_gtest_network.sh
@@ -7,7 +7,7 @@ ip tuntap add dev tun0 mode tun
 ip addr add 192.168.3.11/24 dev tun0
 
 # kernel open ip forward
-echo 1 > /proc/sys/inet/ipv4/ip_forward
+echo 1 > /proc/sys/net/ipv4/ip_forward
 
 # start up tun0
 ifconfig tun0 up
\ No newline at end of file