diff --git a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/pgvector.adoc b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/pgvector.adoc
index 7ee62d0f19e..6ab22fadd84 100644
--- a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/pgvector.adoc
+++ b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/pgvector.adoc
@@ -183,7 +183,7 @@ vectorStore.similaritySearch(SearchRequest.defaults()
     .withTopK(TOP_K)
     .withSimilarityThreshold(SIMILARITY_THRESHOLD)
     .withFilterExpression(b.and(
-        b.in("john", "jill"),
+        b.in("author","john", "jill"),
         b.eq("article_type", "blog")).build()));
 ----