diff --git a/src/nfc/tags/rw_t3t.cc b/src/nfc/tags/rw_t3t.cc
index b911f3b..67526db 100644
--- a/src/nfc/tags/rw_t3t.cc
+++ b/src/nfc/tags/rw_t3t.cc
@@ -1650,7 +1650,12 @@
 
     DLOG_IF(INFO, nfc_debug_enabled)
         << StringPrintf("FeliCa detected (RD, system code %04X)", sc);
-    p_cb->system_codes[p_cb->num_system_codes++] = sc;
+    if (p_cb->num_system_codes < T3T_MAX_SYSTEM_CODES) {
+      p_cb->system_codes[p_cb->num_system_codes++] = sc;
+    } else {
+      LOG(ERROR) << StringPrintf("Exceed T3T_MAX_SYSTEM_CODES!");
+      android_errorWriteLog(0x534e4554, "120499324");
+    }
   }
 
   rw_t3t_handle_get_system_codes_cplt();