diff --git a/ports/portaudio/CONTROL b/ports/portaudio/CONTROL
index 8b74bfd6f..ceeec644c 100644
--- a/ports/portaudio/CONTROL
+++ b/ports/portaudio/CONTROL
@@ -1,3 +1,3 @@
 Source: portaudio
-Version: 19.0.6.00-3
+Version: 19.0.6.00-4
 Description: PortAudio Portable Cross-platform Audio I/O API PortAudio is a free, cross-platform, open-source, audio I/O library.  It lets you write simple audio programs in 'C' or C++ that will compile and run on many platforms including Windows, Macintosh OS X, and Unix (OSS/ALSA). It is intended to promote the exchange of audio software between developers on different platforms. Many applications use PortAudio for Audio I/O.
diff --git a/ports/portaudio/pa_win_waveformat.patch b/ports/portaudio/pa_win_waveformat.patch
new file mode 100644
index 000000000..cba073947
--- /dev/null
+++ b/ports/portaudio/pa_win_waveformat.patch
@@ -0,0 +1,27 @@
+From fa727918e9e56c2a18dbdcfd276c60ac616c56ba Mon Sep 17 00:00:00 2001
+From: Etienne Dechamps <etienne@edechamps.fr>
+Date: Sat, 27 Oct 2018 15:14:27 +0100
+Subject: [PATCH] Add pa_win_waveformat.h to public includes.
+
+pa_win_wasapi.h includes pa_win_waveformat.h, so it has to be
+distributed for pa_win_wasapi.h to be usable.
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 789671a..6a3ed8e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -210,7 +210,7 @@ IF(WIN32)
+   IF(PA_USE_WASAPI)
+     SET(PA_WASAPI_SOURCES src/hostapi/wasapi/pa_win_wasapi.c)
+     SOURCE_GROUP("hostapi\\wasapi" FILES ${PA_WASAPI_SOURCES})
+-    SET(PA_PUBLIC_INCLUDES ${PA_PUBLIC_INCLUDES} include/pa_win_wasapi.h)
++    SET(PA_PUBLIC_INCLUDES ${PA_PUBLIC_INCLUDES} include/pa_win_wasapi.h include/pa_win_waveformat.h)
+     SET(PA_SOURCES ${PA_SOURCES} ${PA_WASAPI_SOURCES})
+     SET(PA_LIBRARY_DEPENDENCIES ${PA_LIBRARY_DEPENDENCIES} ole32 uuid)
+     IF(NOT MSVC)
+-- 
+2.14.1.windows.1
+
diff --git a/ports/portaudio/portfile.cmake b/ports/portaudio/portfile.cmake
index 236cb2cea..349828158 100644
--- a/ports/portaudio/portfile.cmake
+++ b/ports/portaudio/portfile.cmake
@@ -13,6 +13,7 @@ vcpkg_extract_source_archive_ex(
         find_dsound.patch
         wasapi_support.patch
         crt_linkage_build_config.patch
+        pa_win_waveformat.patch
 )
 
 # NOTE: the ASIO backend will be built automatically if the ASIO-SDK is provided