diff --git a/src/kauth/user.c b/src/kauth/user.c
index 2352f503fd..035f493607 100644
--- a/src/kauth/user.c
+++ b/src/kauth/user.c
@@ -157,7 +157,7 @@ ka_UserAuthenticateGeneral(afs_int32 flags, char *name, char *instance,
     int remainingTime = 0;
     struct ktc_encryptionKey key;
     afs_int32 code, dosetpag = 0;
-#if !defined(AFS_NT40_ENV) && !defined(AFS_LINUX20_ENV) && !defined(AFS_USR_LINUX20_ENV) && !defined(AFS_XBSD_ENV)
+#if !defined(AFS_NT40_ENV) && !defined(AFS_LINUX20_ENV) && !defined(AFS_USR_LINUX20_ENV) && !defined(AFS_XBSD_ENV) || defined(AFS_FBSD_ENV)
     sig_t old;
 #endif