diff --git a/ports/libmad/0001-Fix-MSVC-ARM.patch b/ports/libmad/0001-Fix-MSVC-ARM.patch
new file mode 100644
index 00000000000000..9cdc57c7bfeea4
--- /dev/null
+++ b/ports/libmad/0001-Fix-MSVC-ARM.patch
@@ -0,0 +1,25 @@
+diff --git a/mad.h b/mad.h
+index 9ef6cc8..5e3f7aa 100644
+--- a/mad.h
++++ b/mad.h
+@@ -24,7 +24,11 @@
+ extern "C" {
+ # endif
+ 
++#ifdef _WIN64
++# define FPM_64BIT
++#else
+ # define FPM_INTEL
++#endif
+ 
+ 
+ 
+@@ -184,7 +188,7 @@ typedef mad_fixed_t mad_sample_t;
+ 
+ # elif defined(FPM_INTEL)
+ 
+-#  if defined(_MSC_VER)
++#  if defined(_MSC_VER) && defined(_M_IX86)
+ #   pragma warning(push)
+ #   pragma warning(disable: 4035)  /* no return value */
+ static __forceinline
diff --git a/ports/libmad/CONTROL b/ports/libmad/CONTROL
index e0666dcc417c9c..97e9e564aeb553 100644
--- a/ports/libmad/CONTROL
+++ b/ports/libmad/CONTROL
@@ -1,3 +1,3 @@
-Source: libmad
-Version: 0.15.1-4
-Description: high-quality MPEG audio decoder
+Source: libmad
+Version: 0.15.1-5
+Description: high-quality MPEG audio decoder
diff --git a/ports/libmad/portfile.cmake b/ports/libmad/portfile.cmake
index d5831d30155f5b..c61df53decc3fa 100644
--- a/ports/libmad/portfile.cmake
+++ b/ports/libmad/portfile.cmake
@@ -11,14 +11,15 @@ vcpkg_download_distfile(ARCHIVE
 vcpkg_extract_source_archive_ex(
     ARCHIVE ${ARCHIVE}
     OUT_SOURCE_PATH SOURCE_PATH
+    PATCHES
+        0001-Fix-MSVC-ARM.patch
 )
 
 #The archive only contains a Visual Studio 6.0 era DSP project file, so use a custom CMakeLists.txt
 file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
 
-#Use the msvc++ config.h and mad.h header
+#Use the msvc++ config.h header
 file(COPY ${SOURCE_PATH}/msvc++/config.h DESTINATION ${SOURCE_PATH})
-file(COPY ${SOURCE_PATH}/msvc++/mad.h DESTINATION ${SOURCE_PATH})
 
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}