diff --git a/lib/transmitter/gen_test_ab_impl.cc b/lib/transmitter/gen_test_ab_impl.cc
index bb9c9f6..1ce3658 100644
--- a/lib/transmitter/gen_test_ab_impl.cc
+++ b/lib/transmitter/gen_test_ab_impl.cc
@@ -25,6 +25,7 @@
 #endif
 
 #include <gnuradio/io_signature.h>
+#include <grgsm/endian.h>
 #include <grgsm/gsmtap.h>
 #include <grgsm/gsm_constants.h>
 #include "gen_test_ab_impl.h"
diff --git a/lib/transmitter/txtime_setter_impl.cc b/lib/transmitter/txtime_setter_impl.cc
index 9f3a24d..5934ef3 100644
--- a/lib/transmitter/txtime_setter_impl.cc
+++ b/lib/transmitter/txtime_setter_impl.cc
@@ -26,6 +26,7 @@
 #endif
 
 #include <gnuradio/io_signature.h>
+#include <grgsm/endian.h>
 #include <grgsm/gsmtap.h>
 
 #include "txtime_setter_impl.h"
diff --git a/lib/trx/trx_burst_if_impl.cc b/lib/trx/trx_burst_if_impl.cc
index f72eecd..fed84a7 100644
--- a/lib/trx/trx_burst_if_impl.cc
+++ b/lib/trx/trx_burst_if_impl.cc
@@ -27,6 +27,7 @@
 #include <gnuradio/io_signature.h>
 #include <boost/lexical_cast.hpp>
 
+#include "grgsm/endian.h"
 #include "grgsm/misc_utils/udp_socket.h"
 #include "trx_burst_if_impl.h"