diff --git a/sys/ViGEmBus.vcxproj b/sys/ViGEmBus.vcxproj
index 2f8f859..3919234 100644
--- a/sys/ViGEmBus.vcxproj
+++ b/sys/ViGEmBus.vcxproj
@@ -43,6 +43,8 @@
     <Platform Condition="'$(Platform)' == ''">Win32</Platform>
     <RootNamespace>ViGEmBus</RootNamespace>
     <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
+    <AppVeyorBuildVersion Condition=" '$(APPVEYOR_BUILD_VERSION)' == '' ">*</AppVeyorBuildVersion>
+    <AppVeyorBuildVersion Condition=" '$(APPVEYOR_BUILD_VERSION)' != '' ">$(APPVEYOR_BUILD_VERSION)</AppVeyorBuildVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -185,7 +187,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -193,7 +195,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -201,7 +203,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -209,7 +211,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -223,7 +225,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -231,7 +233,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -239,7 +241,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -247,7 +249,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <Inf>
-      <TimeStamp>$(APPVEYOR_BUILD_VERSION)</TimeStamp>
+      <TimeStamp>$(AppVeyorBuildVersion)</TimeStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>$(DDK_LIB_PATH)ntstrsafe.lib;$(DDK_LIB_PATH)wdmsec.lib;%(AdditionalDependencies)</AdditionalDependencies>