diff --git a/docs/plugins/search.md b/docs/plugins/search.md
index 1782eb9d4..ada85bfe6 100644
--- a/docs/plugins/search.md
+++ b/docs/plugins/search.md
@@ -105,7 +105,7 @@ index parts of words that are separated by `-` or `.`:
 ``` yaml
 plugins:
   - search:
-      separator: [\s\-\.]+
+      separator: '[\s\-\.]+'
 ```
 
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