diff --git a/sonoff/support_features.ino b/sonoff/support_features.ino
index a159377d8..5aa59f592 100644
--- a/sonoff/support_features.ino
+++ b/sonoff/support_features.ino
@@ -477,8 +477,9 @@ void GetFeatures(void)
 #ifdef USE_EXS_DIMMER
   feature5 |= 0x00008000;  // xdrv_30_exs_dimmer.ino
 #endif
-
-//  feature5 |= 0x00010000;
+#ifdef USE_ARDUINO_SLAVE
+  feature5 |= 0x00010000;  // xdrv_31_arduino_slave.ino
+#endif
 //  feature5 |= 0x00020000;
 //  feature5 |= 0x00040000;
 //  feature5 |= 0x00080000;
diff --git a/tools/decode-status.py b/tools/decode-status.py
index 7b8bce742..1497f35e2 100755
--- a/tools/decode-status.py
+++ b/tools/decode-status.py
@@ -173,7 +173,7 @@ a_features = [[
     "USE_INA226","USE_A4988_STEPPER","USE_DDS2382","USE_SM2135",
     "USE_SHUTTER","USE_PCF8574","USE_DDSU666","USE_DEEPSLEEP",
     "USE_SONOFF_SC","USE_SONOFF_RF","USE_SONOFF_L1","USE_EXS_DIMMER",
-    "","","","",
+    "USE_ARDUINO_SLAVE","","","",
     "","","","",
     "","","","",
     "","","",""