diff --git a/main.go b/main.go
index c63177097..3ef70a8e3 100644
--- a/main.go
+++ b/main.go
@@ -36,7 +36,7 @@ func main() {
 		ls               = kingpin.Command("ls", "List profiles")
 		exec             = kingpin.Command("exec", "Executes a command with AWS credentials in the environment")
 		execProfile      = exec.Arg("profile", "Name of the profile").Required().String()
-		execSessDuration = exec.Flag("session-ttl", "Expiration time for aws session").Default("8h").OverrideDefaultFromEnvar("AWS_SESSION_TTL").Short('t').Duration()
+		execSessDuration = exec.Flag("session-ttl", "Expiration time for aws session").Default("1h").OverrideDefaultFromEnvar("AWS_SESSION_TTL").Short('t').Duration()
 		execCmd          = exec.Arg("cmd", "Command to execute").Default(os.Getenv("SHELL")).String()
 		execCmdArgs      = exec.Arg("args", "Command arguments").Strings()
 		rm               = kingpin.Command("rm", "Removes credentials")