diff --git a/.ci/build.sh b/.ci/build.sh
index b7a8c6c50..8b8abf967 100644
--- a/.ci/build.sh
+++ b/.ci/build.sh
@@ -520,9 +520,6 @@ then
 
 	# Point CMake to the toolchain file.
 	[ -e "cmake/$toolchain.cmake" ] && cmake_flags_extra="$cmake_flags_extra -D \"CMAKE_TOOLCHAIN_FILE=cmake/$toolchain.cmake\""
-
-	# Use OpenAL as MacPorts doesn't package FAudio.
-	cmake_flags_extra="$cmake_flags_extra -D OPENAL=ON"
 else
 	# Determine Debian architecture.
 	case $arch in
diff --git a/.ci/dependencies_macports.txt b/.ci/dependencies_macports.txt
index 086684d2a..88270b4da 100644
--- a/.ci/dependencies_macports.txt
+++ b/.ci/dependencies_macports.txt
@@ -4,7 +4,7 @@ ninja
 freetype
 libsdl2
 libpng
-openal-soft
+FAudio
 rtmidi
 qt5
 wget
diff --git a/src/sound/CMakeLists.txt b/src/sound/CMakeLists.txt
index db700670d..087f62cb1 100644
--- a/src/sound/CMakeLists.txt
+++ b/src/sound/CMakeLists.txt
@@ -49,6 +49,7 @@ else()
         # Use FAudio, a reimplementation of XAudio2
         pkg_check_modules(FAUDIO IMPORTED_TARGET FAudio)
         if(FAUDIO_FOUND)
+            include_directories(${FAUDIO_INCLUDE_DIRS})
             target_link_libraries(86Box PkgConfig::FAUDIO)
         else()
             find_path(FAUDIO_INCLUDE_DIR NAMES "FAudio.h")