diff --git a/src/nfc/tags/rw_t3t.c b/src/nfc/tags/rw_t3t.c
index b269beb..06fb714 100644
--- a/src/nfc/tags/rw_t3t.c
+++ b/src/nfc/tags/rw_t3t.c
@@ -1653,7 +1653,12 @@
     BE_STREAM_TO_UINT16(sc, p);
 
     RW_TRACE_DEBUG1("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 {
+      RW_TRACE_ERROR0("Exceed T3T_MAX_SYSTEM_CODES!");
+      android_errorWriteLog(0x534e4554, "120499324");
+    }
   }
 
   rw_t3t_handle_get_system_codes_cplt();