diff --git a/dev-upgrade/elastic/logstash-alert.yaml b/dev-upgrade/elastic/logstash-alert.yaml
index 326a0e3..ac86efa 100644
--- a/dev-upgrade/elastic/logstash-alert.yaml
+++ b/dev-upgrade/elastic/logstash-alert.yaml
@@ -51,7 +51,7 @@ data:
       if [stack_trace] {
        mutate {
           gsub => [
-            "stack_trace", "\t", "_"
+            "stack_trace", "\n", "_"
           ]
         }
         mutate {