diff --git a/src/gsm/gsm29205.c b/src/gsm/gsm29205.c
index 0d34468..6ceb8ee 100644
--- a/src/gsm/gsm29205.c
+++ b/src/gsm/gsm29205.c
@@ -20,9 +20,12 @@
  *
  */
 
+#include "config.h"
+
 #include <osmocom/gsm/protocol/gsm_08_08.h>
 #include <osmocom/gsm/gsm29205.h>
 #include <osmocom/gsm/gsm0808.h>
+#include <osmocom/core/utils.h>
 #include <osmocom/core/msgb.h>
 #include <osmocom/gsm/tlv.h>