diff --git a/drivers/unix/net_socket_posix.cpp b/drivers/unix/net_socket_posix.cpp
index 1e52b39be156..b518c7073fc9 100644
--- a/drivers/unix/net_socket_posix.cpp
+++ b/drivers/unix/net_socket_posix.cpp
@@ -248,7 +248,7 @@ bool NetSocketPosix::_can_use_ip(const IPAddress &p_ip, const bool p_for_bind) c
 	return !(_ip_type != IP::TYPE_ANY && !p_ip.is_wildcard() && _ip_type != type);
 }
 
-_FORCE_INLINE_ Error NetSocketPosix::_change_multicast_group(IPAddress p_ip, String p_if_name, bool p_add) {
+_FORCE_INLINE_ Error NetSocketPosix::_change_multicast_group(IPAddress p_ip, const String &p_if_name, bool p_add) {
 	ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
 	ERR_FAIL_COND_V(!_can_use_ip(p_ip, false), ERR_INVALID_PARAMETER);
 
diff --git a/drivers/unix/net_socket_posix.h b/drivers/unix/net_socket_posix.h
index aa59ff36eedb..e5944df5b465 100644
--- a/drivers/unix/net_socket_posix.h
+++ b/drivers/unix/net_socket_posix.h
@@ -62,7 +62,7 @@ class NetSocketPosix : public NetSocket {
 
 	NetError _get_socket_error() const;
 	void _set_socket(SOCKET_TYPE p_sock, IP::Type p_ip_type, bool p_is_stream);
-	_FORCE_INLINE_ Error _change_multicast_group(IPAddress p_ip, String p_if_name, bool p_add);
+	_FORCE_INLINE_ Error _change_multicast_group(IPAddress p_ip, const String &p_if_name, bool p_add);
 	_FORCE_INLINE_ void _set_close_exec_enabled(bool p_enabled);
 
 protected:
diff --git a/main/performance.cpp b/main/performance.cpp
index aff26c20a362..a37f72866b54 100644
--- a/main/performance.cpp
+++ b/main/performance.cpp
@@ -330,7 +330,7 @@ Performance::Performance() {
 	singleton = this;
 }
 
-Performance::MonitorCall::MonitorCall(Callable p_callable, Vector<Variant> p_arguments) {
+Performance::MonitorCall::MonitorCall(Callable p_callable, const Vector<Variant> &p_arguments) {
 	_callable = p_callable;
 	_arguments = p_arguments;
 }
diff --git a/main/performance.h b/main/performance.h
index 34162b2da9c4..d84ac58497ab 100644
--- a/main/performance.h
+++ b/main/performance.h
@@ -57,7 +57,7 @@ class Performance : public Object {
 		Vector<Variant> _arguments;
 
 	public:
-		MonitorCall(Callable p_callable, Vector<Variant> p_arguments);
+		MonitorCall(Callable p_callable, const Vector<Variant> &p_arguments);
 		MonitorCall();
 		Variant call(bool &r_error, String &r_error_message);
 	};