diff --git a/src/net/Url.cpp b/src/net/Url.cpp
index d33b49d..464114b 100644
--- a/src/net/Url.cpp
+++ b/src/net/Url.cpp
@@ -42,7 +42,7 @@ Url::Url() :
     m_host(nullptr),
     m_password(nullptr),
     m_user(nullptr),
-    m_coin(""),
+    m_coin(),
     m_variant(xmrig::VARIANT_AUTO),
     m_url(nullptr),
     m_port(kDefaultPort)
@@ -65,7 +65,7 @@ Url::Url(const char *url) :
     m_host(nullptr),
     m_password(nullptr),
     m_user(nullptr),
-    m_coin(""),
+    m_coin(),
     m_variant(xmrig::VARIANT_AUTO),
     m_url(nullptr),
     m_port(kDefaultPort)
@@ -77,7 +77,7 @@ Url::Url(const char *url) :
 Url::Url(const char *host, uint16_t port, const char *user, const char *password) :
     m_password(password ? strdup(password) : nullptr),
     m_user(user ? strdup(user) : nullptr),
-    m_coin(""),
+    m_coin(),
     m_variant(xmrig::VARIANT_AUTO),
     m_url(nullptr),
     m_port(port)