diff --git a/apps/api/src/lib/extract/build-prompts.ts b/apps/api/src/lib/extract/build-prompts.ts
index 05f5bf6f..6d89eb2f 100644
--- a/apps/api/src/lib/extract/build-prompts.ts
+++ b/apps/api/src/lib/extract/build-prompts.ts
@@ -97,7 +97,7 @@ export function buildBatchExtractSystemPrompt(
 ): string {
   return (
     (systemPrompt ? `${systemPrompt}\n` : "") +
-    `Always prioritize using the provided content to answer the question. Do not make up an answer. Do not hallucinate. Be concise and follow the schema always if provided. If the document provided is not relevant to the prompt nor to the final user schema ${JSON.stringify(multiEntitySchema)}, return null. Here are the urls the user provided of which he wants to extract information from: ` +
+    `Always prioritize using the provided content to answer the question. Do not make up an answer. Do not hallucinate. In case you can't find the information and the string is required, instead of 'N/A' or 'Not speficied', return an empty string: '', if it's not a string and you can't find the information, return null. Be concise and follow the schema always if provided. If the document provided is not relevant to the prompt nor to the final user schema ${JSON.stringify(multiEntitySchema)}, return null. Here are the urls the user provided of which he wants to extract information from: ` +
     links.join(", ")
   );
 }
diff --git a/apps/api/src/lib/extract/completions/singleAnswer.ts b/apps/api/src/lib/extract/completions/singleAnswer.ts
index 0f32d8c6..df66263a 100644
--- a/apps/api/src/lib/extract/completions/singleAnswer.ts
+++ b/apps/api/src/lib/extract/completions/singleAnswer.ts
@@ -26,7 +26,7 @@ export async function singleAnswerCompletion({
       mode: "llm",
       systemPrompt:
         (systemPrompt ? `${systemPrompt}\n` : "") +
-        "Always prioritize using the provided content to answer the question. Do not make up an answer. Do not hallucinate. Return 'null' the property that you don't find the information. Be concise and follow the schema always if provided. Here are the urls the user provided of which he wants to extract information from: " +
+        "Always prioritize using the provided content to answer the question. Do not make up an answer. Do not hallucinate. In case you can't find the information and the string is required, instead of 'N/A' or 'Not speficied', return an empty string: '', if it's not a string and you can't find the information, return null. Be concise and follow the schema always if provided. Here are the urls the user provided of which he wants to extract information from: " +
         links.join(", "),
       prompt: "Today is: " + new Date().toISOString() + "\n" + prompt,
       schema: rSchema,