diff --git a/modules/rtp_rtcp/source/rtp_packet.cc b/modules/rtp_rtcp/source/rtp_packet.cc
index 10d4143513..aa8eb107f6 100644
--- a/modules/rtp_rtcp/source/rtp_packet.cc
+++ b/modules/rtp_rtcp/source/rtp_packet.cc
@@ -343,10 +343,7 @@ bool RtpPacket::ParseBuffer(const uint8_t* buffer, size_t size) {
   }
 
   extensions_size_ = 0;
-  for (ExtensionInfo& location : extension_entries_) {
-    location.offset = 0;
-    location.length = 0;
-  }
+  extension_entries_.clear();
   if (has_extension) {
     /* RTP header extension, RFC 3550.
      0                   1                   2                   3
diff --git a/modules/rtp_rtcp/source/rtp_packet_unittest.cc b/modules/rtp_rtcp/source/rtp_packet_unittest.cc
index e19f191439..0203cec988 100644
--- a/modules/rtp_rtcp/source/rtp_packet_unittest.cc
+++ b/modules/rtp_rtcp/source/rtp_packet_unittest.cc
@@ -365,6 +365,22 @@ TEST(RtpPacketTest, ParseWith2Extensions) {
   EXPECT_EQ(kAudioLevel, audio_level);
 }
 
+TEST(RtpPacketTest, ParseSecondPacketWithFewerExtensions) {
+  RtpPacketToSend::ExtensionManager extensions;
+  extensions.Register(kRtpExtensionTransmissionTimeOffset,
+                      kTransmissionOffsetExtensionId);
+  extensions.Register(kRtpExtensionAudioLevel, kAudioLevelExtensionId);
+  RtpPacketReceived packet(&extensions);
+  EXPECT_TRUE(packet.Parse(kPacketWithTOAndAL, sizeof(kPacketWithTOAndAL)));
+  EXPECT_TRUE(packet.HasExtension<TransmissionOffset>());
+  EXPECT_TRUE(packet.HasExtension<AudioLevel>());
+
+  // Second packet without audio level.
+  EXPECT_TRUE(packet.Parse(kPacketWithTO, sizeof(kPacketWithTO)));
+  EXPECT_TRUE(packet.HasExtension<TransmissionOffset>());
+  EXPECT_FALSE(packet.HasExtension<AudioLevel>());
+}
+
 TEST(RtpPacketTest, ParseWithAllFeatures) {
   RtpPacketToSend::ExtensionManager extensions;
   extensions.Register(kRtpExtensionTransmissionTimeOffset,