diff --git a/scd/app-openpgp.c b/scd/app-openpgp.c
index 1fa865f69..425adfb42 100644
--- a/scd/app-openpgp.c
+++ b/scd/app-openpgp.c
@@ -6138,6 +6138,9 @@ do_reselect (app_t app, ctrl_t ctrl)
 static gpg_error_t
 do_check_aid (app_t app, ctrl_t ctrl, const unsigned char *aid, size_t aidlen)
 {
+  (void)app;
+  (void)ctrl;
+
   if (aidlen >= sizeof openpgp_aid
       && memcmp (aid, openpgp_aid, sizeof openpgp_aid) == 0)
     return 0;
diff --git a/scd/app-piv.c b/scd/app-piv.c
index 0d0863d57..33b0150dc 100644
--- a/scd/app-piv.c
+++ b/scd/app-piv.c
@@ -3613,6 +3613,9 @@ do_reselect (app_t app, ctrl_t ctrl)
 static gpg_error_t
 do_check_aid (app_t app, ctrl_t ctrl, const unsigned char *aid, size_t aidlen)
 {
+  (void)app;
+  (void)ctrl;
+
   if (aidlen >= sizeof piv_aid
       && memcmp (aid, piv_aid, sizeof piv_aid) == 0)
     return 0;