diff --git a/book.json b/book.json
index 4adbe647..98e382c1 100644
--- a/book.json
+++ b/book.json
@@ -5,5 +5,8 @@
         "lunr@1.2.0"
     ],
     "pluginsConfig": {
+        "lunr": {
+            "ignoreSpecialCharacters": true
+        }
     }
 }