diff --git a/src/e1_input.c b/src/e1_input.c
index 7fbf179..c3c7c75 100644
--- a/src/e1_input.c
+++ b/src/e1_input.c
@@ -49,6 +49,7 @@
 #include <openbsc/abis_rsl.h>
 #include <openbsc/linuxlist.h>
 #include <openbsc/subchan_demux.h>
+#include <openbsc/trau_frame.h>
 #include <openbsc/trau_mux.h>
 
 #define NUM_E1_TS	32