diff --git a/tests/msc_vlr/msc_vlr_tests.h b/tests/msc_vlr/msc_vlr_tests.h
index a2b2f22..1f83013 100644
--- a/tests/msc_vlr/msc_vlr_tests.h
+++ b/tests/msc_vlr/msc_vlr_tests.h
@@ -26,6 +26,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 
+#include <osmocom/crypt/utran_cipher.h>
 #include <osmocom/msc/gsm_data.h>
 #include <osmocom/msc/vlr.h>
 #include <osmocom/msc/msub.h>