diff --git a/talk/app/webrtc/webrtcsdp_unittest.cc b/talk/app/webrtc/webrtcsdp_unittest.cc
index a647148813..31dcf6ecef 100644
--- a/talk/app/webrtc/webrtcsdp_unittest.cc
+++ b/talk/app/webrtc/webrtcsdp_unittest.cc
@@ -294,6 +294,15 @@ static const char kSdpSctpDataChannelStringWithSctpPort[] =
     "a=ice-pwd:pwd_data\r\n"
     "a=mid:data_content_name\r\n";
 
+static const char kSdpSctpDataChannelStringWithOldProtocol[] =
+    "m=application 9 DTLS/SCTP webrtc-datachannel\r\n"
+    "a=max-message-size=100000\r\n"
+    "a=sctp-port 5000\r\n"
+    "c=IN IP4 0.0.0.0\r\n"
+    "a=ice-ufrag:ufrag_data\r\n"
+    "a=ice-pwd:pwd_data\r\n"
+    "a=mid:data_content_name\r\n";
+
 static const char kSdpSctpDataChannelWithCandidatesString[] =
     "m=application 2345 DTLS/SCTP 5000\r\n"
     "c=IN IP4 74.125.127.126\r\n"
@@ -2147,6 +2156,19 @@ TEST_F(WebRtcSdpTest, DeserializeSdpWithSctpDataChannelsWithSctpPort) {
   EXPECT_TRUE(CompareSessionDescription(jdesc, jdesc_output));
 }
 
+TEST_F(WebRtcSdpTest, DeserializeSdpWithSctpDataChannelsWithOldProtocol) {
+  AddSctpDataChannel();
+  JsepSessionDescription jdesc(kDummyString);
+  ASSERT_TRUE(jdesc.Initialize(desc_.Copy(), kSessionId, kSessionVersion));
+
+  std::string sdp_with_data = kSdpString;
+  sdp_with_data.append(kSdpSctpDataChannelStringWithOldProtocol);
+  JsepSessionDescription jdesc_output(kDummyString);
+
+  EXPECT_TRUE(SdpDeserialize(sdp_with_data, &jdesc_output));
+  EXPECT_TRUE(CompareSessionDescription(jdesc, jdesc_output));
+}
+
 // Test to check the behaviour if sctp-port is specified
 // on the m= line and in a=sctp-port.
 TEST_F(WebRtcSdpTest, DeserializeSdpWithMultiSctpPort) {