diff --git a/specs/common/schemas/IndexSettings.yml b/specs/common/schemas/IndexSettings.yml
index 6c6a226a4c5..8e9b613e664 100644
--- a/specs/common/schemas/IndexSettings.yml
+++ b/specs/common/schemas/IndexSettings.yml
@@ -866,7 +866,7 @@ exactOnSingleWordQuery:
 
 alternativesAsExact:
   type: string
-  enum: [ignorePlurals, singleWordSynonym, multiWordsSynonym]
+  enum: [ignorePlurals, singleWordSynonym, multiWordsSynonym, ignoreConjugations]
   x-categories:
     - Query strategy