diff --git a/scripts/starts/start_legacy.sh b/scripts/starts/start_legacy.sh
index f05df7f9..bcbd4dc1 100644
--- a/scripts/starts/start_legacy.sh
+++ b/scripts/starts/start_legacy.sh
@@ -2,16 +2,14 @@
 . "$CRASHDIR"/libs/check_cmd.sh
 
 start_legacy(){	
+	ckcmd nohup && _nohup=nohup
 	if ckcmd su && grep -q 'shellcrash:x:0:7890' /etc/passwd;then
-		su shellcrash -c "$1 >/dev/null 2>&1 & echo \$! > /tmp/ShellCrash/$2.pid"
+		su shellcrash -c "$_nohup $1 >/dev/null 2>&1 & echo \$! > /tmp/ShellCrash/$2.pid"
 	elif ckcmd setsid; then
-        setsid $1 >/dev/null 2>&1 &
+        $_nohup setsid $1 >/dev/null 2>&1 &
         echo $! > "/tmp/ShellCrash/$2.pid"
-	elif ckcmd nohup; then
-		nohup $1 >/dev/null 2>&1 &
-		echo $! > "/tmp/ShellCrash/$2.pid"
 	else
-		$1 >/dev/null 2>&1 &
+		$_nohup $1 >/dev/null 2>&1 &
 		echo $! > "/tmp/ShellCrash/$2.pid"
 	fi
 }