diff --git a/swig/grgsm_swig.i b/swig/grgsm_swig.i
index 26b6a6d..65c48be 100644
--- a/swig/grgsm_swig.i
+++ b/swig/grgsm_swig.i
@@ -71,6 +71,7 @@
 //#include "grgsm/misc_utils/time_spec.h"
 #include "grgsm/misc_utils/fn_time.h"
 #include "grgsm/transmitter/txtime_setter.h"
+#include "grgsm/transmitter/preprocess_tx_burst.h"
 #include "grgsm/misc_utils/trx_burst_if.h"
 %}
 
@@ -182,3 +183,5 @@
 
 %include "grgsm/transmitter/txtime_setter.h"
 GR_SWIG_BLOCK_MAGIC2(gsm, txtime_setter);
+%include "grgsm/transmitter/preprocess_tx_burst.h"
+GR_SWIG_BLOCK_MAGIC2(gsm, preprocess_tx_burst);