diff --git a/source/auth/auth_unix.c b/source/auth/auth_unix.c
index c68aa159fc1..83e51921ea3 100644
--- a/source/auth/auth_unix.c
+++ b/source/auth/auth_unix.c
@@ -22,6 +22,7 @@
 
 #include "includes.h"
 #include "auth/auth.h"
+#include "system/passwd.h"
 
 /* TODO: look at how to best fill in parms retrieveing a struct passwd info
  * except in case USER_INFO_DONT_CHECK_UNIX_ACCOUNT is set