diff --git a/src/operators/rx.cc b/src/operators/rx.cc
index ff84d95d..8be06a39 100644
--- a/src/operators/rx.cc
+++ b/src/operators/rx.cc
@@ -33,19 +33,12 @@ bool Rx::evaluate(Transaction *transaction, Rule *rule,
     const std::string& input, std::shared_ptr<RuleMessage> ruleMessage) {
     SMatch match;
     std::list<SMatch> matches;
-    Regex * re = m_re;
 
     if (m_param.empty()) {
         return true;
     }
 
-    std::string eparam = MacroExpansion::expand(m_param, transaction);
-
-    if (eparam != m_param) {
-        re = new Regex(eparam);
-    }
-
-    matches = re->searchAll(input);
+    matches = m_re->searchAll(input);
     if (rule && rule->getActionsByName("capture").size() > 0 && transaction) {
         int i = 0;
         matches.reverse();
@@ -65,10 +58,6 @@ bool Rx::evaluate(Transaction *transaction, Rule *rule,
         logOffset(ruleMessage, i.m_offset, i.m_length);
     }
 
-    if (re != m_re) {
-        delete re;
-    }
-
     if (matches.size() > 0) {
         return true;
     }