diff --git a/media-sound/mac/mac-4.44.recipe b/media-sound/mac/mac-4.70.recipe
similarity index 92%
rename from media-sound/mac/mac-4.44.recipe
rename to media-sound/mac/mac-4.70.recipe
index 8124ca800..ca6874090 100644
--- a/media-sound/mac/mac-4.44.recipe
+++ b/media-sound/mac/mac-4.70.recipe
@@ -7,8 +7,9 @@ COPYRIGHT="2000-2019 Matthew T. Ashland"
 LICENSE="Monkey's Audio SDK and Source Code License Agreement"
 REVISION="1"
 SOURCE_URI="https://www.monkeysaudio.com/files/MAC_SDK_${portVersion/./}.zip"
-CHECKSUM_SHA256="e2af2e9d57b7cd66e5d6525fcd8fcde3839f48a623d31aca22a92cb0d0ea297c"
+CHECKSUM_SHA256="442bffe3e36bd90b4cfe92a07de7a9cfc9744c4fd643afd0bdd4a8985b6d99bf"
 SOURCE_DIR=""
+PATCHES="mac-$portVersion.patchset"
 
 ARCHITECTURES="!x86_gcc2 x86 x86_64"
 SECONDARY_ARCHITECTURES="x86"
@@ -20,7 +21,7 @@ if [ "$targetArchitecture" = x86_gcc2 ]; then
 	commandBinDir=$prefix/bin
 fi
 
-libVersion="4"
+libVersion="5"
 
 PROVIDES="
 	mac$secondaryArchSuffix = $portVersion
diff --git a/media-sound/mac/patches/mac-4.70.patchset b/media-sound/mac/patches/mac-4.70.patchset
new file mode 100644
index 000000000..3022b6b91
--- /dev/null
+++ b/media-sound/mac/patches/mac-4.70.patchset
@@ -0,0 +1,24 @@
+From d3ba1a87284e0325202ba694976346659d5cdc32 Mon Sep 17 00:00:00 2001
+From: Robert Kausch <robert.kausch@freac.org>
+Date: Sun, 28 Apr 2019 22:50:39 +0000
+Subject: Fix file access
+
+
+diff --git a/Source/Shared/StdLibFileIO.cpp b/Source/Shared/StdLibFileIO.cpp
+index eee3c01..17b03e9 100644
+--- a/Source/Shared/StdLibFileIO.cpp
++++ b/Source/Shared/StdLibFileIO.cpp
+@@ -218,9 +218,7 @@ int64 CStdLibFileIO::GetPosition()
+ {
+ #ifdef PLATFORM_ANDROID
+     return ftell(m_pFile);
+-#elif defined(PLATFORM_LINUX)
+-	return ftello64(m_pFile);
+-#elif PLATFORM_APPLE
++#elif !defined(PLATFORM_WINDOWS)
+     return ftello(m_pFile);
+ #else
+ 	return _ftelli64(m_pFile);
+-- 
+2.21.0
+