diff --git a/tests/test_io.c b/tests/test_io.c
index bd301cf..55b1bec 100644
--- a/tests/test_io.c
+++ b/tests/test_io.c
@@ -35,6 +35,7 @@
 #include <libyang/libyang.h>
 
 #include <session_p.h>
+#include <session_client.h>
 #include <messages_p.h>
 #include "config.h"