diff --git a/accel-pppd/extra/pppd_compat.c b/accel-pppd/extra/pppd_compat.c
index 482a7080727dfb6568abe74a9a5017ef3fb91445..25223a87d5464efd5a81841206a20a718a6f7010 100644
--- a/accel-pppd/extra/pppd_compat.c
+++ b/accel-pppd/extra/pppd_compat.c
@@ -429,7 +429,7 @@ static void write_radattr(struct pppd_compat_pd *pd, struct rad_packet_t *pack)
 		}
 	} else {
 		sprintf(fname1, "%s.XXXXXX", conf_radattr_prefix);
-		mktemp(fname1);
+		mkstemp(fname1);
 	}
 
 	f = fopen(fname1, "w");