diff --git a/third-party/proxygen/src/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp b/third-party/proxygen/src/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp
index 9cb12581bdee32..73e06d7eb11487 100644
--- a/third-party/proxygen/src/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp
+++ b/third-party/proxygen/src/proxygen/lib/http/session/test/HTTPDownstreamSessionTest.cpp
@@ -68,6 +68,8 @@ class HTTPDownstreamTest : public testing::Test {
     rawCodec_ = codec.get();
     if (dynamic_cast<HTTP1xCodec*>(rawCodec_) != nullptr) {
       dynamic_cast<HTTP1xCodec*>(rawCodec_)->setStrictValidation(true);
+    } else if (dynamic_cast<HTTP2Codec*>(rawCodec_) != nullptr) {
+      dynamic_cast<HTTP2Codec*>(rawCodec_)->setStrictValidation(true);
     }
 
     // If the codec is H2, getHeaderIndexingStrategy will be called when setting