diff --git a/proxygen/lib/http/session/HTTPTransaction.cpp b/proxygen/lib/http/session/HTTPTransaction.cpp
index de30ab7737..0bc28b66e0 100644
--- a/proxygen/lib/http/session/HTTPTransaction.cpp
+++ b/proxygen/lib/http/session/HTTPTransaction.cpp
@@ -782,7 +782,16 @@ void HTTPTransaction::onIngressTimeout() {
     if (windowUpdateTimeout) {
       HTTPException ex(
           HTTPException::Direction::INGRESS_AND_EGRESS,
-          folly::to<std::string>("ingress timeout, streamID=", id_));
+          folly::to<std::string>(
+              "ingress timeout, streamID=",
+              id_,
+              ", timeout=",
+              idleTimeout_.has_value()
+                  ? std::chrono::duration_cast<std::chrono::milliseconds>(
+                        idleTimeout_.value())
+                        .count()
+                  : -1,
+              "ms"));
       ex.setProxygenError(kErrorWriteTimeout);
       // This is a protocol error
       ex.setCodecStatusCode(ErrorCode::PROTOCOL_ERROR);
@@ -790,7 +799,16 @@ void HTTPTransaction::onIngressTimeout() {
     } else {
       HTTPException ex(
           HTTPException::Direction::INGRESS,
-          folly::to<std::string>("ingress timeout, streamID=", id_));
+          folly::to<std::string>(
+              "ingress timeout, streamID=",
+              id_,
+              ", timeout=",
+              idleTimeout_.has_value()
+                  ? std::chrono::duration_cast<std::chrono::milliseconds>(
+                        idleTimeout_.value())
+                        .count()
+                  : -1,
+              "ms"));
       ex.setProxygenError(kErrorTimeout);
       onError(ex);
     }
diff --git a/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp b/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp
index 22c8a4710e..53c3069e5b 100644
--- a/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp
+++ b/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp
@@ -2847,7 +2847,12 @@ TEST_F(HTTP2DownstreamSessionTest, H2TimeoutWin) {
   handler->expectEgressPaused();
   handler->expectError([&](const HTTPException& ex) {
     ASSERT_EQ(ex.getProxygenError(), kErrorWriteTimeout);
-    ASSERT_EQ(folly::to<std::string>("ingress timeout, streamID=", streamID),
+    ASSERT_EQ(folly::to<std::string>(
+                  "ingress timeout, streamID=",
+                  streamID,
+                  ", timeout=",
+                  transactionTimeouts_->getDefaultTimeout().count(),
+                  "ms"),
               std::string(ex.what()));
     handler->terminate();
   });
@@ -4150,7 +4155,12 @@ TEST_F(HTTP2DownstreamSessionTest, TestTransactionStallByFlowControl) {
 
   handler->expectError([&](const HTTPException& ex) {
     ASSERT_EQ(ex.getProxygenError(), kErrorWriteTimeout);
-    ASSERT_EQ(folly::to<std::string>("ingress timeout, streamID=", streamID),
+    ASSERT_EQ(folly::to<std::string>(
+                  "ingress timeout, streamID=",
+                  streamID,
+                  ", timeout=",
+                  transactionTimeouts_->getDefaultTimeout().count(),
+                  "ms"),
               std::string(ex.what()));
     handler->terminate();
   });