diff --git a/include/connection.hpp b/include/connection.hpp
index 09a3945..5ffe969 100644
--- a/include/connection.hpp
+++ b/include/connection.hpp
@@ -104,7 +104,7 @@ public:
      *  Sets also the proxy for the Instance you used to initialize this
      *  Connection.
      */
-    void set_proxy(const string_view proxy);
+    void set_proxy(string_view proxy);
 
 private:
     Instance &_instance;
diff --git a/include/curl_wrapper.hpp b/include/curl_wrapper.hpp
index faf79a5..dcd40ec 100644
--- a/include/curl_wrapper.hpp
+++ b/include/curl_wrapper.hpp
@@ -137,7 +137,7 @@ public:
      *
      *  @since  0.1.0
      */
-    void set_proxy(const string_view proxy);
+    void set_proxy(string_view proxy);
 
 protected:
     /*!
diff --git a/include/instance.hpp b/include/instance.hpp
index cecb324..28f8f27 100644
--- a/include/instance.hpp
+++ b/include/instance.hpp
@@ -50,8 +50,7 @@ public:
      *
      *  @since  0.1.0
      */
-    explicit Instance(const string_view hostname,
-                      const string_view access_token);
+    explicit Instance(string_view hostname, string_view access_token);
 
     /*!
      *  @brief  Returns the hostname.
diff --git a/src/api.cpp b/src/api.cpp
index d0ffefa..cb60a8b 100644
--- a/src/api.cpp
+++ b/src/api.cpp
@@ -23,6 +23,8 @@ API::API(const endpoint_type &endpoint)
     : _endpoint{endpoint}
 {}
 
+// TODO: look for a better way.
+// NOLINTNEXTLINE(cert-err58-cpp)
 const map<API::endpoint_type,string_view> API::_endpoint_map
 {
     {v1::apps, "/api/v1/apps"},