diff --git a/setup.py b/setup.py
index aa49d77..38639ed 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@ setup(
     name = "Slowloris",
     py_modules = ["slowloris"],
     entry_points = {"console_scripts": ["slowloris=slowloris:main"]},
-    version = "0.1",
+    version = "0.1.1",
     description = "Low bandwidth DoS tool. Slowloris rewrite in Python.",
     author = "Gokberk Yaltirakli",
     author_email = "webdosusb@gmail.com",
diff --git a/slowloris.py b/slowloris.py
index 70c5b4b..d93624d 100644
--- a/slowloris.py
+++ b/slowloris.py
@@ -27,6 +27,9 @@ def init_socket(ip):
     return s
 
 def main():
+    if len(sys.argv) != 2:
+        print("Usage: {} example.com".format(sys.argv[0]))
+        return
     ip = sys.argv[1]
     socket_count = 200
     log("Attacking {} with {} sockets.".format(ip, socket_count))