diff --git a/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc b/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
index 360176b3cb..9c04c25a18 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
@@ -420,7 +420,7 @@ int RtpFormatVp8::WriteTIDAndKeyIdxFields(uint8_t* x_field,
   *data_field = 0;
   if (TIDFieldPresent()) {
     *x_field |= kTBit;
-    assert(hdr_info_.temporalIdx >= 0 && hdr_info_.temporalIdx <= 3);
+    assert(hdr_info_.temporalIdx <= 3);
     *data_field |= hdr_info_.temporalIdx << 6;
     *data_field |= hdr_info_.layerSync ? kYBit : 0;
   }