diff --git a/master/fsm_master.c b/master/fsm_master.c
index 15029055ee9492c8291e2d1869936f4ea38ccc88..a96a7a4c185a603b5661887181cfd4bb8aacf1d4 100644
--- a/master/fsm_master.c
+++ b/master/fsm_master.c
@@ -1207,7 +1207,7 @@ void ec_fsm_master_state_reg_request(
         }
 
         request->state = EC_INT_REQUEST_SUCCESS;
-        EC_SLAVE_DBG(fsm->slave, 1, "Register request successful.\n");
+        EC_SLAVE_DBG(request->slave, 1, "Register request successful.\n");
     } else {
         request->state = EC_INT_REQUEST_FAILURE;
         EC_MASTER_ERR(master, "Register request failed.\n");