1 files changed, 1 insertions, 1 deletions

diff --git a/networking/tftp.c b/networking/tftp.c
index 737ae7893..6cad295e3 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -127,7 +127,7 @@ static int tftp( USE_GETPUT(const int cmd,)
         char *cp;
 
         unsigned org_port;
-        len_and_sockaddr *const from = alloca(offsetof(len_and_sockaddr, u.sa) + peer_lsa->len);
+        len_and_sockaddr *const from = alloca(LSA_LEN_SIZE + peer_lsa->len);
 
         /* Can't use RESERVE_CONFIG_BUFFER here since the allocation
          * size varies meaning BUFFERS_GO_ON_STACK would fail */