diff --git a/src/HttpsClient.cpp b/src/HttpsClient.cpp
index 80f5843080..5b9215cab6 100644
--- a/src/HttpsClient.cpp
+++ b/src/HttpsClient.cpp
@@ -363,7 +363,7 @@ void HttpsClient::httpsGet(
 	client->httpsGet(deqSites, timeout, complete);
 }
 
-bool HttpsClient::httpsParseUrl(const std::string strUrl, std::string& strDomain, std::string& strPath)
+bool HttpsClient::httpsParseUrl(const std::string& strUrl, std::string& strDomain, std::string& strPath)
 {
 	static boost::regex	reUrl("(?i)\\`\\s*https://([^/]+)(/.*)\\s*\\'");	// https://DOMAINPATH
 
diff --git a/src/HttpsClient.h b/src/HttpsClient.h
index 6370065164..930ffeaad3 100644
--- a/src/HttpsClient.h
+++ b/src/HttpsClient.h
@@ -86,7 +86,7 @@ public:
 		boost::posix_time::time_duration timeout,
 		boost::function<void(const boost::system::error_code& ecResult, std::string& strData)> complete);
 
-	static bool httpsParseUrl(const std::string strUrl, std::string& strDomain, std::string& strPath);
+	static bool httpsParseUrl(const std::string& strUrl, std::string& strDomain, std::string& strPath);
 };
 #endif
 // vim:ts=4