diff --git a/headers/modsecurity/rule.h b/headers/modsecurity/rule.h
index 12d7ff79..a5ca9f92 100644
--- a/headers/modsecurity/rule.h
+++ b/headers/modsecurity/rule.h
@@ -54,7 +54,7 @@ class Rule {
     Rule(operators::Operator *_op,
             variables::Variables *_variables,
             std::vector<actions::Action *> *_actions,
-            std::string fileName,
+            std::unique_ptr<std::string> fileName,
             int lineNumber);
     explicit Rule(const std::string &marker);
     virtual ~Rule();
@@ -128,7 +128,7 @@ class Rule {
     operators::Operator *m_op;
     std::unique_ptr<Rule> m_chainedRuleChild;
     Rule *m_chainedRuleParent;
-    std::string m_fileName;
+    std::shared_ptr<std::string> m_fileName;
     std::string m_marker;
     std::string m_rev;
     std::string m_ver;
diff --git a/headers/modsecurity/rule_message.h b/headers/modsecurity/rule_message.h
index f86df667..0ddfc883 100644
--- a/headers/modsecurity/rule_message.h
+++ b/headers/modsecurity/rule_message.h
@@ -104,7 +104,7 @@ class RuleMessage {
     std::string m_reference;
     std::string m_rev;
     Rule *m_rule;
-    std::string m_ruleFile;
+    std::shared_ptr<std::string> m_ruleFile;
     int m_ruleId;
     int m_ruleLine;
     bool m_saveMessage;
diff --git a/src/parser/seclang-parser.cc b/src/parser/seclang-parser.cc
index fb2acdf2..aecd5d14 100644
--- a/src/parser/seclang-parser.cc
+++ b/src/parser/seclang-parser.cc
@@ -2318,7 +2318,7 @@ namespace yy {
             /* op */ op,
             /* variables */ v,
             /* actions */ a,
-            /* file name */ *yystack_[3].location.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*yystack_[3].location.end.filename)),
             /* line number */ yystack_[3].location.end.line
             ));
 
@@ -2341,7 +2341,7 @@ namespace yy {
             /* op */ yystack_[0].value.as < std::unique_ptr<Operator> > ().release(),
             /* variables */ v,
             /* actions */ NULL,
-            /* file name */ *yystack_[2].location.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*yystack_[2].location.end.filename)),
             /* line number */ yystack_[2].location.end.line
             ));
         if (driver.addSecRule(std::move(rule)) == false) {
@@ -2362,7 +2362,7 @@ namespace yy {
             /* op */ NULL,
             /* variables */ NULL,
             /* actions */ a,
-            /* file name */ *yystack_[1].location.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*yystack_[1].location.end.filename)),
             /* line number */ yystack_[1].location.end.line
             ));
         driver.addSecAction(std::move(rule));
@@ -2381,7 +2381,7 @@ namespace yy {
         std::unique_ptr<RuleScript> r(new RuleScript(
             /* path to script */ yystack_[1].value.as < std::string > (),
             /* actions */ a,
-            /* file name */ *yystack_[1].location.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*yystack_[1].location.end.filename)),
             /* line number */ yystack_[1].location.end.line
             ));
 
diff --git a/src/parser/seclang-parser.yy b/src/parser/seclang-parser.yy
index 0aaf33c9..f5273c0d 100644
--- a/src/parser/seclang-parser.yy
+++ b/src/parser/seclang-parser.yy
@@ -1080,7 +1080,7 @@ expression:
             /* op */ op,
             /* variables */ v,
             /* actions */ a,
-            /* file name */ *@1.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*@1.end.filename)),
             /* line number */ @1.end.line
             ));
 
@@ -1099,7 +1099,7 @@ expression:
             /* op */ $3.release(),
             /* variables */ v,
             /* actions */ NULL,
-            /* file name */ *@1.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*@1.end.filename)),
             /* line number */ @1.end.line
             ));
         if (driver.addSecRule(std::move(rule)) == false) {
@@ -1116,7 +1116,7 @@ expression:
             /* op */ NULL,
             /* variables */ NULL,
             /* actions */ a,
-            /* file name */ *@1.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*@1.end.filename)),
             /* line number */ @1.end.line
             ));
         driver.addSecAction(std::move(rule));
@@ -1131,7 +1131,7 @@ expression:
         std::unique_ptr<RuleScript> r(new RuleScript(
             /* path to script */ $1,
             /* actions */ a,
-            /* file name */ *@1.end.filename,
+            /* file name */ std::unique_ptr<std::string>(new std::string(*@1.end.filename)),
             /* line number */ @1.end.line
             ));
 
diff --git a/src/rule.cc b/src/rule.cc
index 8b516cf0..b9efefa7 100644
--- a/src/rule.cc
+++ b/src/rule.cc
@@ -70,7 +70,7 @@ Rule::Rule(const std::string &marker)
     m_op(NULL),
     m_chainedRuleChild(nullptr),
     m_chainedRuleParent(NULL),
-    m_fileName(""),
+    /* m_fileName(""), */
     m_marker(marker),
     m_rev(""),
     m_ver(""),
@@ -83,7 +83,7 @@ Rule::Rule(const std::string &marker)
 Rule::Rule(Operator *_op,
     variables::Variables *_variables,
     std::vector<Action *> *actions,
-    std::string fileName,
+    std::unique_ptr<std::string> fileName,
     int lineNumber)
     : m_theDisruptiveAction(nullptr),
     m_logData(nullptr),
@@ -103,7 +103,7 @@ Rule::Rule(Operator *_op,
     m_op(_op),
     m_chainedRuleChild(nullptr),
     m_chainedRuleParent(NULL),
-    m_fileName(fileName),
+    m_fileName(std::move(fileName)),
     m_marker(""),
     m_rev(""),
     m_ver(""),
diff --git a/src/rule_message.cc b/src/rule_message.cc
index e19f4b49..e0aaf9b6 100644
--- a/src/rule_message.cc
+++ b/src/rule_message.cc
@@ -26,7 +26,7 @@ namespace modsecurity {
 std::string RuleMessage::_details(const RuleMessage *rm) {
     std::string msg;
 
-    msg.append(" [file \"" + std::string(rm->m_ruleFile) + "\"]");
+    msg.append(" [file \"" + std::string(*rm->m_ruleFile.get()) + "\"]");
     msg.append(" [line \"" + std::to_string(rm->m_ruleLine) + "\"]");
     msg.append(" [id \"" + std::to_string(rm->m_ruleId) + "\"]");
     msg.append(" [rev \"" + rm->m_rev + "\"]");
diff --git a/src/rule_script.h b/src/rule_script.h
index 533b9c13..5c95277b 100644
--- a/src/rule_script.h
+++ b/src/rule_script.h
@@ -46,9 +46,9 @@ class RuleScript : public Rule {
  public:
     RuleScript(const std::string &name,
         std::vector<Action *> *actions,
-        const std::string &fileName,
+        std::unique_ptr<std::string> fileName,
         int lineNumber)
-            : Rule(NULL, NULL, actions, fileName, lineNumber),
+            : Rule(NULL, NULL, actions, std::move(fileName), lineNumber),
         m_name(name) { }
 
     bool init(std::string *err);
diff --git a/src/transaction.cc b/src/transaction.cc
index e4879077..cd20cd91 100644
--- a/src/transaction.cc
+++ b/src/transaction.cc
@@ -1764,7 +1764,7 @@ std::string Transaction::toJSON(int parts) {
             LOGFY_ADD("match", a.m_match.c_str());
             LOGFY_ADD("reference", a.m_reference.c_str());
             LOGFY_ADD("ruleId", std::to_string(a.m_ruleId).c_str());
-            LOGFY_ADD("file", a.m_ruleFile.c_str());
+            LOGFY_ADD("file", a.m_ruleFile->c_str());
             LOGFY_ADD("lineNumber", std::to_string(a.m_ruleLine).c_str());
             LOGFY_ADD("data", a.m_data.c_str());
             LOGFY_ADD("severity", std::to_string(a.m_severity).c_str());