diff --git a/src/base/net/stratum/Client.cpp b/src/base/net/stratum/Client.cpp
index 0693afb7..ab4b934d 100644
--- a/src/base/net/stratum/Client.cpp
+++ b/src/base/net/stratum/Client.cpp
@@ -261,7 +261,7 @@ int64_t xmrig::Client::submit(const JobResult &result)
 
 void xmrig::Client::onResolved(const Dns &dns, int status)
 {
-    assert(client->m_listener != nullptr);
+    assert(m_listener != nullptr);
     if (!m_listener) {
         return reconnect();
     }
@@ -846,7 +846,7 @@ void xmrig::Client::read(ssize_t nread)
         return;
     }
 
-    assert(client->m_listener != nullptr);
+    assert(m_listener != nullptr);
     if (!m_listener) {
         return reconnect();
     }
diff --git a/src/base/net/stratum/Pools.cpp b/src/base/net/stratum/Pools.cpp
index ba55e94b..7a738cf0 100644
--- a/src/base/net/stratum/Pools.cpp
+++ b/src/base/net/stratum/Pools.cpp
@@ -164,7 +164,7 @@ void xmrig::Pools::print() const
             Log::i()->text(GREEN_BOLD(" * ") WHITE_BOLD("POOL #%-7zu") "\x1B[1;%dm%s\x1B[0m variant " WHITE_BOLD("%s"),
                            i,
                            color,
-                           pool.url(),
+                           pool.url().data(),
                            pool.algorithm().variantName()
                            );
         }
@@ -172,7 +172,7 @@ void xmrig::Pools::print() const
             Log::i()->text(" * POOL #%-7zu%s%s variant=%s %s",
                            i,
                            pool.isEnabled() ? "" : "-",
-                           pool.url(),
+                           pool.url().data(),
                            pool.algorithm().variantName(),
                            pool.isTLS() ? "TLS" : ""
                            );
diff --git a/src/base/net/stratum/Tls.cpp b/src/base/net/stratum/Tls.cpp
index e96d9946..d92d7e54 100644
--- a/src/base/net/stratum/Tls.cpp
+++ b/src/base/net/stratum/Tls.cpp
@@ -150,13 +150,13 @@ bool xmrig::Client::Tls::send()
 bool xmrig::Client::Tls::verify(X509 *cert)
 {
     if (cert == nullptr) {
-        LOG_ERR("[%s] Failed to get server certificate", m_client->m_pool.url());
+        LOG_ERR("[%s] Failed to get server certificate", m_client->url());
 
         return false;
     }
 
     if (!verifyFingerprint(cert)) {
-        LOG_ERR("[%s] Failed to verify server certificate fingerprint", m_client->m_pool.url());
+        LOG_ERR("[%s] Failed to verify server certificate fingerprint", m_client->url());
 
         const char *fingerprint = m_client->m_pool.fingerprint();
         if (strlen(m_fingerprint) == 64 && fingerprint != nullptr) {