diff --git a/main.tf b/main.tf
index 96c2b5e1..f7dcf3fb 100644
--- a/main.tf
+++ b/main.tf
@@ -104,5 +104,5 @@ resource "aws_lambda_function" "notify_slack" {
     ]
   }
 
-  depends_on = ["aws_cloudwatch_log_group.lambda"]
+  depends_on = [aws_cloudwatch_log_group.lambda]
 }