diff --git a/include/hamlib/rig.h b/include/hamlib/rig.h
index 490bab24b..20eb6466a 100644
--- a/include/hamlib/rig.h
+++ b/include/hamlib/rig.h
@@ -2680,6 +2680,8 @@ struct rig_state {
     freq_t spectrum_spans[HAMLIB_MAX_SPECTRUM_SPANS];                   /*!< Supported spectrum scope frequency spans in Hz in center mode. Last entry must be 0. */
     struct rig_spectrum_avg_mode spectrum_avg_modes[HAMLIB_MAX_SPECTRUM_AVG_MODES]; /*!< Supported spectrum scope averaging modes. Last entry must have NULL name. */
     int spectrum_attenuator[HAMLIB_MAXDBLSTSIZ];    /*!< Spectrum attenuator list in dB, 0 terminated */
+    volatile int morse_data_handler_thread_run;
+    void *morse_data_handler_priv_data;
 };
 
 /**