diff --git a/3rdparty/portaudio/build/msvc/portaudio_vs2013.vcxproj b/3rdparty/portaudio/build/msvc/portaudio_vs2013.vcxproj
index 23b6ba7fa1..a636ae4bb3 100644
--- a/3rdparty/portaudio/build/msvc/portaudio_vs2013.vcxproj
+++ b/3rdparty/portaudio/build/msvc/portaudio_vs2013.vcxproj
@@ -44,43 +44,51 @@
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release (NO ASIO)|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug (NO ASIO)|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release (NO ASIO)|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120_xp</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">