const char * const config_element_num_subbuf = "subbuffer_count";
const char * const config_element_switch_timer_interval = "switch_timer_interval";
const char * const config_element_read_timer_interval = "read_timer_interval";
-const char * const config_element_monitor_timer_interval = "monitor_timer_interval";
-const char * const config_element_blocking_timeout = "blocking_timeout";
+LTTNG_HIDDEN const char * const config_element_monitor_timer_interval = "monitor_timer_interval";
+LTTNG_HIDDEN const char * const config_element_blocking_timeout = "blocking_timeout";
const char * const config_element_output = "output";
const char * const config_element_output_type = "output_type";
const char * const config_element_tracefile_size = "tracefile_size";