diff --git a/docs/reference/ingest/processors/gsub.asciidoc b/docs/reference/ingest/processors/gsub.asciidoc
index 96e016944160a..bd84336b8f52b 100644
--- a/docs/reference/ingest/processors/gsub.asciidoc
+++ b/docs/reference/ingest/processors/gsub.asciidoc
@@ -25,7 +25,7 @@ include::common-options.asciidoc[]
 {
   "gsub": {
     "field": "field1",
-    "pattern": "\.",
+    "pattern": "\\.",
     "replacement": "-"
   }
 }