diff --git a/webrtc/modules/audio_coding/codecs/g722/audio_encoder_g722.cc b/webrtc/modules/audio_coding/codecs/g722/audio_encoder_g722.cc
index 89cd9ead7..7a2ec6288 100644
--- a/webrtc/modules/audio_coding/codecs/g722/audio_encoder_g722.cc
+++ b/webrtc/modules/audio_coding/codecs/g722/audio_encoder_g722.cc
@@ -101,6 +101,7 @@ bool AudioEncoderG722::EncodeInternal(uint32_t rtp_timestamp,
     const int encoded = WebRtcG722_Encode(
         encoders_[i].encoder, encoders_[i].speech_buffer.get(),
         samples_per_channel, encoders_[i].encoded_buffer.get());
+    CHECK_GE(encoded, 0);
     CHECK_EQ(encoded, samples_per_channel / 2);
   }
 
diff --git a/webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h b/webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h
index d4b35678e..7fe11a7eb 100644
--- a/webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h
+++ b/webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h
@@ -91,8 +91,7 @@ int16_t WebRtcG722_FreeEncoder(G722EncInst *G722enc_inst);
  * Output:
  *        - encoded           : The encoded data vector
  *
- * Return value               : >0 - Length (in bytes) of coded data
- *                              -1 - Error
+ * Return value              : Length (in bytes) of coded data
  */
 
 int16_t WebRtcG722_Encode(G722EncInst* G722enc_inst,