diff --git a/bsd-ce.c b/bsd-ce.c
index 9709e4f..3eac539 100644
--- a/bsd-ce.c
+++ b/bsd-ce.c
@@ -1,3 +1,4 @@
+#include <err.h>
 #include <fcntl.h>
 #include <stdint.h>
 #include <stdio.h>