diff --git a/build.sh b/build.sh
index 885df51..44eb844 100644
--- a/build.sh
+++ b/build.sh
@@ -195,6 +195,7 @@ readonly TCP2_DIR="${BASE_DIR}/ngtcp2-${MY_CPU}"
 rm -rf "${TCP2_DIR}" && mkdir "${TCP2_DIR}"
 tar -xvf "${LIBS_DIR}/.pkg/ngtcp2.tar.gz" --strip-components=1 -C "${TCP2_DIR}"
 pushd "${TCP2_DIR}"
+patch -p1 -b < "${BASE_DIR}/patch/ngtcp2_htons.diff"
 CFLAGS="-march=${MY_MARCH} -mtune=${MY_MTUNE} -DNDEBUG -D_WIN32_WINNT=0x0501 -I${LIBS_DIR}/include" LDFLAGS="-L${LIBS_DIR}/lib" OPENSSL_CFLAGS="-I${LIBS_DIR}/include" OPENSSL_LIBS="-L${LIBS_DIR}/lib -lssl -lcrypto -lws2_32 -lz" ZLIB_CFLAGS="-I${LIBS_DIR}/include" ZLIB_LIBS="-L${LIBS_DIR}/lib -lz" ./configure --prefix="${LIBS_DIR}" --enable-lib-only --with-openssl --disable-shared
 make && make install
 popd
diff --git a/patch/ngtcp2_htons.diff b/patch/ngtcp2_htons.diff
new file mode 100644
index 0000000..63e5c30
--- /dev/null
+++ b/patch/ngtcp2_htons.diff
@@ -0,0 +1,25 @@
+From 20995d0137b72fbbdb57f53bb8c272b2c5b61280 Mon Sep 17 00:00:00 2001
+From: Dmitry Karpov <dkarpov@roku.com>
+Date: Tue, 28 Jun 2022 18:02:36 -0700
+Subject: [PATCH] Fixed error in ngtcp2_htons.
+
+---
+ lib/ngtcp2_net.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/ngtcp2_net.h b/lib/ngtcp2_net.h
+index f8d8e518..b1f28096 100644
+--- a/lib/ngtcp2_net.h
++++ b/lib/ngtcp2_net.h
+@@ -101,7 +101,7 @@ STIN uint32_t ngtcp2_htonl(uint32_t hostlong) {
+ STIN uint16_t ngtcp2_htons(uint16_t hostshort) {
+   uint16_t res;
+   unsigned char *p = (unsigned char *)&res;
+-  *p++ = (unsigned char)hostshort >> 8;
++  *p++ = (unsigned char)(hostshort >> 8);
+   *p = hostshort & 0xffu;
+   return res;
+ }
+-- 
+2.35.1.windows.2
+