diff --git a/radio/1.0/IRadioResponse.hal b/radio/1.0/IRadioResponse.hal
index 8697e57..9f19169 100644
--- a/radio/1.0/IRadioResponse.hal
+++ b/radio/1.0/IRadioResponse.hal
@@ -1565,6 +1565,7 @@
      *   RadioError:INVALID_MODEM_STATE
      *   RadioError:NO_RESOURCES
      *   RadioError:CANCELLED
+     *   RadioError:MODE_NOT_SUPPORTED
      */
     oneway sendCDMAFeatureCodeResponse(RadioResponseInfo info);