diff --git a/src/transaction.cc b/src/transaction.cc
index 1a524a92..ddd90af6 100644
--- a/src/transaction.cc
+++ b/src/transaction.cc
@@ -1348,7 +1348,7 @@ std::string Transaction::toOldAuditLogFormatIndex(const std::string &filename,
     ss << "\" ";
 
     ss << this->m_httpCodeReturned << " ";
-    ss << this->m_responseBody.tellp();
+    ss << this->m_responseBody.tellp() << " ";
     /** TODO: Check variable */
     ss << utils::string::dash_if_empty(
         this->m_collections.resolveFirst("REFERER").get()) << " ";