diff --git a/internal/constants.py b/internal/constants.py
index 2825b45..c3d5aa1 100755
--- a/internal/constants.py
+++ b/internal/constants.py
@@ -99,7 +99,8 @@
 CMD_STOP_CVD = "stop_cvd"
 ENV_ANDROID_BUILD_TOP = "ANDROID_BUILD_TOP"
 
-LOCALHOST_ADB_SERIAL = "127.0.0.1:%d"
+LOCALHOST = "127.0.0.1"
+LOCALHOST_ADB_SERIAL = LOCALHOST + ":%d"
 
 SSH_BIN = "ssh"
 ADB_BIN = "adb"