diff --git a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
index 6d39beb70..08ae54eb1 100644
--- a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
+++ b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
@@ -1766,7 +1766,7 @@ int multiSlsDetector::getReceiverStreamingPort(int detPos) {
     return sls::minusOneIfDifferent(r);
 }
 
-void multiSlsDetector::setClientDataStreamingInIP(std::string ip,
+void multiSlsDetector::setClientDataStreamingInIP(const std::string& ip,
                                                          int detPos) {
     if (ip.length()) {
         int prev_streaming = enableDataStreamingToClient(-1);
@@ -1800,7 +1800,7 @@ std::string multiSlsDetector::getClientStreamingIP(int detPos) {
     return sls::concatenateIfDifferent(r);
 }
 
-void multiSlsDetector::setReceiverDataStreamingOutIP(std::string ip,
+void multiSlsDetector::setReceiverDataStreamingOutIP(const std::string& ip,
                                                             int detPos) {
     if (ip.length()) {
         int prev_streaming = enableDataStreamingFromReceiver(-1, detPos);
diff --git a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.h b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.h
index da1dd52d3..347c20ddf 100644
--- a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.h
+++ b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.h
@@ -998,7 +998,7 @@ class multiSlsDetector : public virtual slsDetectorDefs,
      * By default, it is the IP of receiver hostname
      * @param detPos -1 for all detectors in  list or specific detector position
      */
-   void setClientDataStreamingInIP(std::string ip = "",
+   void setClientDataStreamingInIP(const std::string& ip = "",
                                            int detPos = -1);
 
     /**
@@ -1016,7 +1016,7 @@ class multiSlsDetector : public virtual slsDetectorDefs,
      * By default, it is the IP of receiver hostname
      * @param detPos -1 for all detectors in  list or specific detector position
      */
-    void setReceiverDataStreamingOutIP(std::string ip = "",
+    void setReceiverDataStreamingOutIP(const std::string& ip = "",
                                               int detPos = -1);
 
     /**
diff --git a/slsDetectorSoftware/slsDetector/slsDetector.cpp b/slsDetectorSoftware/slsDetector/slsDetector.cpp
index 37caa3b4c..3c1e5b06b 100644
--- a/slsDetectorSoftware/slsDetector/slsDetector.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetector.cpp
@@ -2902,7 +2902,7 @@ int slsDetector::getReceiverStreamingPort() {
 	return thisDetector->receiver_zmqport;
 }
 
-void slsDetector::setClientStreamingIP(std::string sourceIP) {
+void slsDetector::setClientStreamingIP(const std::string& sourceIP) {
 	struct addrinfo *result;
 	// on failure to convert to a valid ip
 	if (dataSocket->ConvertHostnameToInternetAddress(sourceIP.c_str(), &result)) {
diff --git a/slsDetectorSoftware/slsDetector/slsDetector.h b/slsDetectorSoftware/slsDetector/slsDetector.h
index ead0beb32..756a7cb27 100644
--- a/slsDetectorSoftware/slsDetector/slsDetector.h
+++ b/slsDetectorSoftware/slsDetector/slsDetector.h
@@ -979,7 +979,7 @@ public:
 	 * Sets the client zmq ip\sa sharedSlsDetector
 	 * @param sourceIP client zmq ip
 	 */
-	void setClientStreamingIP(std::string sourceIP);
+	void setClientStreamingIP(const std::string& sourceIP);
 
 	/**
 	 * Returns the client zmq ip \sa sharedSlsDetector