diff --git a/build/prepare-install-package.targets b/build/prepare-install-package.targets
index dd15fb52..aeed101d 100644
--- a/build/prepare-install-package.targets
+++ b/build/prepare-install-package.targets
@@ -12,8 +12,8 @@
       <CompiledToolkitPath>$(CompiledRootPath)\SMAPI.Toolkit\net4.5</CompiledToolkitPath>
       <PackagePath>$(SolutionDir)\..\bin\SMAPI installer</PackagePath>
       <PackageDevPath>$(SolutionDir)\..\bin\SMAPI installer for developers</PackageDevPath>
-      <PackageBundlePlatform>windows</PackageBundlePlatform>
-      <PackageBundlePlatform Condition="$(OS) != 'Windows_NT'">mono</PackageBundlePlatform>
+      <PlatformName>windows</PlatformName>
+      <PlatformName Condition="$(OS) != 'Windows_NT'">unix</PlatformName>
     </PropertyGroup>
     <ItemGroup>
       <CompiledMods Include="$(SolutionDir)\..\bin\$(Configuration)\Mods\**\*.*" />
@@ -28,8 +28,8 @@
     <Copy SourceFiles="$(TargetDir)\unix-install.sh" DestinationFiles="$(PackagePath)\install on Mac.command" />
     <Copy SourceFiles="$(TargetDir)\windows-install.bat" DestinationFiles="$(PackagePath)\install on Windows.bat" />
     <Copy SourceFiles="$(TargetDir)\README.txt" DestinationFiles="$(PackagePath)\README.txt" />
-    <Copy SourceFiles="$(TargetDir)\$(TargetName).exe" DestinationFiles="$(PackagePath)\internal\install.exe" />
-    <Copy SourceFiles="$(TargetDir)\windows-exe-config.xml" DestinationFiles="$(PackagePath)\internal\install.exe.config" />
+    <Copy SourceFiles="$(TargetDir)\$(TargetName).exe" DestinationFiles="$(PackagePath)\internal\$(PlatformName)-install.exe" />
+    <Copy Condition="$(OS) == 'Windows_NT'" SourceFiles="$(TargetDir)\windows-exe-config.xml" DestinationFiles="$(PackagePath)\internal\$(PlatformName)-install.exe.config" />
 
     <!--copy bundle files-->
     <Copy SourceFiles="$(TargetDir)\unix-launcher.sh" DestinationFiles="$(PackagePath)\bundle\StardewModdingAPI" />
@@ -62,12 +62,12 @@
       <PackageFiles Include="$(PackagePath)\**\*.*" />
     </ItemGroup>
     <Copy SourceFiles="@(PackageFiles)" DestinationFolder="$(PackageDevPath)\%(RecursiveDir)" />
-    <ZipDirectory FromDirPath="$(PackageDevPath)\bundle" ToFilePath="$(PackageDevPath)\internal\$(PackageBundlePlatform).dat" />
+    <ZipDirectory FromDirPath="$(PackageDevPath)\bundle" ToFilePath="$(PackageDevPath)\internal\$(PlatformName)-install.dat" />
     <RemoveDir Directories="$(PackageDevPath)\bundle" />
 
     <!-- finalise normal installer -->
     <ReplaceFileText FilePath="$(PackagePath)\bundle\smapi-internal\StardewModdingAPI.config.json" Search="&quot;DeveloperMode&quot;: true" Replace="&quot;DeveloperMode&quot;: false" />
-    <ZipDirectory FromDirPath="$(PackagePath)\bundle" ToFilePath="$(PackagePath)\internal\$(PackageBundlePlatform).dat" />
+    <ZipDirectory FromDirPath="$(PackagePath)\bundle" ToFilePath="$(PackagePath)\internal\$(PlatformName)-install.dat" />
     <RemoveDir Directories="$(PackagePath)\bundle" />
   </Target>
 
diff --git a/docs/release-notes.md b/docs/release-notes.md
index bcd35dbb..76bf4b15 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -1,4 +1,7 @@
 # Release notes
+## 2.8.1
+* Fixed installer error on Windows.
+
 ## 2.8
 * For players:
   * Reorganised SMAPI files:
diff --git a/docs/technical-docs.md b/docs/technical-docs.md
index 83e4ea2b..5883ee00 100644
--- a/docs/technical-docs.md
+++ b/docs/technical-docs.md
@@ -58,12 +58,12 @@ on the wiki for the first-time setup.
 
 2. In Windows:
    1. Rebuild the solution in Release mode.
-   2. Copy `windows.dat` from `bin/SMAPI installer` and `bin/SMAPI installer for developers` to
+   2. Copy `windows-install.*` from `bin/SMAPI installer` and `bin/SMAPI installer for developers` to
       Linux/Mac.
 
 3. In Linux/Mac:
    1. Rebuild the solution in Release mode.
-   2. Add the `windows.dat` files to the `bin/SMAPI installer` and
+   2. Add the `windows-install.*` files to the `bin/SMAPI installer` and
       `bin/SMAPI installer for developers` folders.
    3. Rename the folders to `SMAPI <version> installer` and `SMAPI <version> installer for developers`.
    4. Zip the two folders.
diff --git a/src/SMAPI.Installer/Program.cs b/src/SMAPI.Installer/Program.cs
index c56c9f80..0ca5aea0 100644
--- a/src/SMAPI.Installer/Program.cs
+++ b/src/SMAPI.Installer/Program.cs
@@ -33,7 +33,7 @@ namespace StardewModdingApi.Installer
         {
             // find install bundle
             PlatformID platform = Environment.OSVersion.Platform;
-            FileInfo zipFile = new FileInfo(Path.Combine(Program.InstallerPath, $"{(platform == PlatformID.Win32NT ? "windows" : "mono")}.dat"));
+            FileInfo zipFile = new FileInfo(Path.Combine(Program.InstallerPath, $"{(platform == PlatformID.Win32NT ? "windows" : "unix")}-install.dat"));
             if (!zipFile.Exists)
             {
                 Console.WriteLine($"Oops! Some of the installer files are missing; try redownloading the installer. (Missing file: {zipFile.FullName})");
diff --git a/src/SMAPI.Installer/README.txt b/src/SMAPI.Installer/README.txt
index abff9938..79c90cc0 100644
--- a/src/SMAPI.Installer/README.txt
+++ b/src/SMAPI.Installer/README.txt
@@ -24,8 +24,8 @@ Manual install
 THIS IS NOT RECOMMENDED FOR MOST PLAYERS. See instructions above instead.
 If you really want to install SMAPI manually, here's how.
 
-1. Unzip "internal/windows.dat" (on Windows) or "internal/mono.dat" (on Linux/Mac). You can change
-   '.dat' to '.zip', it's just a normal zip file renamed to prevent confusion.
+1. Unzip "internal/windows-install.dat" (on Windows) or "internal/unix-install.dat" (on Linux/Mac).
+   You can change '.dat' to '.zip', it's just a normal zip file renamed to prevent confusion.
 2. Copy the files from the folder you just unzipped into your game folder. The
    `StardewModdingAPI.exe` file should be right next to the game's executable.
 3.
diff --git a/src/SMAPI.Installer/unix-install.sh b/src/SMAPI.Installer/unix-install.sh
index 57e48f4b..e3a5d8cc 100644
--- a/src/SMAPI.Installer/unix-install.sh
+++ b/src/SMAPI.Installer/unix-install.sh
@@ -14,7 +14,7 @@ fi
 
 # validate Mono & run installer
 if $COMMAND mono >/dev/null 2>&1; then
-    mono internal/install.exe
+    mono internal/unix-install.exe
 else
    echo "Oops! Looks like Mono isn't installed. Please install Mono from https://mono-project.com, reboot, and run this installer again."
    read
diff --git a/src/SMAPI.Installer/windows-install.bat b/src/SMAPI.Installer/windows-install.bat
index 1ebec989..7a8b409b 100644
--- a/src/SMAPI.Installer/windows-install.bat
+++ b/src/SMAPI.Installer/windows-install.bat
@@ -1 +1 @@
-START /WAIT /B internal/install.exe
+START /WAIT /B internal/windows-install.exe