diff --git a/src/transaction.cc b/src/transaction.cc
index 678a89d9de..0eb51f4e70 100644
--- a/src/transaction.cc
+++ b/src/transaction.cc
@@ -162,9 +162,9 @@ Transaction::Transaction(ModSecurity *ms, RulesSet *rules, void *logCbData)
     m_variableTimeYear(""),
     m_logCbData(logCbData),
     TransactionAnchoredVariables(this) {
-    m_id = std::unique_ptr<std::string>(
-        new std::string(
-            std::to_string(m_timeStamp)));
+    m_id = std::unique_ptr<std::string>( new std::string(
+        std::to_string(m_timeStamp)
+        + std::to_string(modsecurity::utils::generate_transaction_unique_id())));
 
     m_variableUrlEncodedError.set("0", 0);