diff --git a/modules/congestion_controller/rtp/transport_feedback_adapter.cc b/modules/congestion_controller/rtp/transport_feedback_adapter.cc
index b070b0e23a..877ee8e797 100644
--- a/modules/congestion_controller/rtp/transport_feedback_adapter.cc
+++ b/modules/congestion_controller/rtp/transport_feedback_adapter.cc
@@ -220,8 +220,15 @@ TransportFeedbackAdapter::ProcessTransportFeedbackInner(
     current_offset_ = feedback_time;
   } else {
     // TODO(srte): We shouldn't need to do rounding here.
-    current_offset_ += feedback.GetBaseDelta(last_timestamp_)
-                           .RoundDownTo(TimeDelta::Millis<1>());
+    const TimeDelta delta = feedback.GetBaseDelta(last_timestamp_)
+                                .RoundDownTo(TimeDelta::Millis<1>());
+    // Protect against assigning current_offset_ negative value.
+    if (delta < Timestamp::Zero() - current_offset_) {
+      RTC_LOG(LS_WARNING) << "Unexpected feedback timestamp received.";
+      current_offset_ = feedback_time;
+    } else {
+      current_offset_ += delta;
+    }
   }
   last_timestamp_ = feedback.GetBaseTime();
 
diff --git a/modules/congestion_controller/rtp/transport_feedback_adapter_unittest.cc b/modules/congestion_controller/rtp/transport_feedback_adapter_unittest.cc
index e03bcc3750..32e5f0a537 100644
--- a/modules/congestion_controller/rtp/transport_feedback_adapter_unittest.cc
+++ b/modules/congestion_controller/rtp/transport_feedback_adapter_unittest.cc
@@ -284,9 +284,9 @@ TEST_F(TransportFeedbackAdapterTest, SendTimeWrapsBothWays) {
                                static_cast<int64_t>((1 << 23) - 1) / 1000;
   std::vector<PacketResult> packets;
   packets.push_back(
-      CreatePacket(kHighArrivalTimeMs - 64, 200, 0, 1500, PacedPacketInfo()));
+      CreatePacket(kHighArrivalTimeMs + 64, 210, 0, 1500, PacedPacketInfo()));
   packets.push_back(
-      CreatePacket(kHighArrivalTimeMs + 64, 210, 1, 1500, PacedPacketInfo()));
+      CreatePacket(kHighArrivalTimeMs - 64, 210, 1, 1500, PacedPacketInfo()));
   packets.push_back(
       CreatePacket(kHighArrivalTimeMs, 220, 2, 1500, PacedPacketInfo()));