diff --git a/eoptasks/eoptasks.py b/eoptasks/eoptasks.py
index 68ebd28..9366816 100755
--- a/eoptasks/eoptasks.py
+++ b/eoptasks/eoptasks.py
@@ -71,6 +71,9 @@ if args.keywords:
         selected_servers.extend([
             x for x in servers
             if keywords.issubset(x.keywords) and not x in selected_servers])
+    for keyword in args.keywords.split(','):
+        if keyword.startswith('!') or keyword.startswith('-'):
+            selected_servers = [x for x in selected_servers if keyword[1:] not in x.keywords]
 else:
     selected_servers = servers