diff --git a/pkg/cli/cmds/config.go b/pkg/cli/cmds/config.go
index 1b05078efe..f539e767d9 100644
--- a/pkg/cli/cmds/config.go
+++ b/pkg/cli/cmds/config.go
@@ -11,7 +11,7 @@ var (
 	ConfigFlag = cli.StringFlag{
 		Name:   "config,c",
 		Usage:  "(config) Load configuration from `FILE`",
-		EnvVar: "K3S_CONFIG_FILE",
+		EnvVar: version.ProgramUpper + "_CONFIG_FILE",
 		Value:  "/etc/rancher/" + version.Program + "/config.yaml",
 	}
 )