diff --git a/bin/sassw b/bin/sassw
index 05dc4b4..fac0abb 100755
--- a/bin/sassw
+++ b/bin/sassw
@@ -14,7 +14,7 @@ import subprocess
 import sys
 import time
 
-filename = sys.argv[1]
+filename = sys.argv[1] if len(sys.argv) > 1 else '.'
 if os.path.isdir(filename):
     scss_filenames = [x for x in os.listdir(filename) if x.startswith('_') and x.endswith('.scss')]
     if not scss_filenames: