diff --git a/gitnexus-web/src/core/embeddings/embedding-pipeline.ts b/gitnexus-web/src/core/embeddings/embedding-pipeline.ts
index ea4756da2..18a710988 100644
--- a/gitnexus-web/src/core/embeddings/embedding-pipeline.ts
+++ b/gitnexus-web/src/core/embeddings/embedding-pipeline.ts
@@ -124,7 +124,7 @@ const createVectorIndex = async (
   `;
 
   try {
-    await executeQuery(cypher);
+    await executeQuery(cypher, false); // readOnly=false: CALL CREATE_VECTOR_INDEX is a write operation
   } catch (error) {
     // Index might already exist
     if (import.meta.env.DEV) {