diff --git a/zebra/main.c b/zebra/main.c
index 1083ae5..6d40d70 100644
--- a/zebra/main.c
+++ b/zebra/main.c
@@ -48,6 +48,9 @@
 pid_t old_pid;
 pid_t pid;
 
+/* Pacify zclient.o in libzebra, which expects this variable. */
+struct thread_master *master;
+
 /* Route retain mode flag. */
 int retain_mode = 0;