diff --git a/lib/oto/commands/util/slack.dart b/lib/oto/commands/util/slack.dart
index c98437d..bdedbda 100644
--- a/lib/oto/commands/util/slack.dart
+++ b/lib/oto/commands/util/slack.dart
@@ -20,15 +20,9 @@ class Slack extends Command {
       if (value != null) {
         message = value as DataSlack;
       }
-    } else if (data.message != null) {
-      message = data.message;
-    }
-
-    if (message != null) {
-      await sender.send(message);
-    } else {
-      throw Exception('property or message field should not be null');
     }
+    message = data.message;
+    await sender.send(message);
 
     return simpleFuture;
   }