diff --git a/swig/grgsm_swig.i b/swig/grgsm_swig.i
index 52b7d88..a9f5091 100644
--- a/swig/grgsm_swig.i
+++ b/swig/grgsm_swig.i
@@ -9,6 +9,7 @@
 
 %{
 #include "grgsm/receiver/receiver.h"
+#include "grgsm/receiver/clock_offset_control.h"
 #include "grgsm/decoding/control_channels_decoder.h"
 #include "grgsm/decryption/decryption.h"
 #include "grgsm/demapping/universal_ctrl_chans_demapper.h"
@@ -23,6 +24,9 @@
 
 %include "grgsm/receiver/receiver.h"
 GR_SWIG_BLOCK_MAGIC2(gsm, receiver);
+%include "grgsm/receiver/clock_offset_control.h"
+GR_SWIG_BLOCK_MAGIC2(gsm, clock_offset_control);
+
 
 %include "grgsm/decoding/control_channels_decoder.h"
 GR_SWIG_BLOCK_MAGIC2(gsm, control_channels_decoder);