diff --git a/packages/core/src/storage/vectorStore/PGVectorStore.ts b/packages/core/src/storage/vectorStore/PGVectorStore.ts
index b48848577c..3109d9d37c 100644
--- a/packages/core/src/storage/vectorStore/PGVectorStore.ts
+++ b/packages/core/src/storage/vectorStore/PGVectorStore.ts
@@ -294,7 +294,7 @@ export class PGVectorStore implements VectorStore {
 
     const ret = {
       nodes: nodes,
-      similarities: results.rows.map((row) => row.s),
+      similarities: results.rows.map((row) => 1 - row.s),
       ids: results.rows.map((row) => row.id),
     };