diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index 686c4ac219..7f12f22c6f 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -39,12 +39,6 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
-    <CustomCommands>
-      <CustomCommands>
-        <Command type="AfterBuild" command="cp ${TargetFile} ../mods/ra" workingdir="${ProjectDir}" />
-        <Command type="AfterBuild" command="cp ${TargetFile}.mdb ../mods/ra" workingdir="${ProjectDir}" />
-      </CustomCommands>
-    </CustomCommands>
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
@@ -58,12 +52,6 @@
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
     <Optimize>true</Optimize>
-    <CustomCommands>
-      <CustomCommands>
-        <Command type="AfterBuild" command="cp ${TargetFile} ../mods/ra" workingdir="${ProjectDir}" />
-        <Command type="AfterBuild" command="cp ${TargetFile}.mdb ../mods/ra" workingdir="${ProjectDir}" />
-      </CustomCommands>
-    </CustomCommands>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -147,16 +135,29 @@
     </BootstrapperPackage>
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
   <Target Name="AfterBuild">
+    <MakeDir Directories="$(SolutionDir)mods/ra/"/>
+    <Copy
+      SourceFiles="$(TargetPath)"
+      DestinationFolder="$(SolutionDir)mods/ra/"/>
+    <!--
+        We need to copy OpenRA.Mods.RA.pdb (not `.dll.pdb`). This is only necessary on Windows.
+        Mono outputs a `.dll.mdb` so we can just append `.mdb` directly.
+    -->
+    <Copy
+      SourceFiles="$(TargetDir)$(TargetName).pdb"
+      DestinationFolder="$(SolutionDir)mods/ra/"
+      Condition="'$(OS)' == 'Windows_NT'"/>
+    <Copy
+      SourceFiles="$(TargetPath).mdb"
+      DestinationFolder="$(SolutionDir)mods/ra/"
+      Condition="'$(OS)' == 'Unix'"/>
+    <!-- Uncomment these lines when debugging or adding to this target
+    <Message Text="DEBUG OS:                     $(OS)"/>
+    <Message Text="DEBUG SolutionDir:            $(SolutionDir)"/>
+    <Message Text="DEBUG TargetPath:             $(TargetPath)"/>
+    <Message Text="DEBUG TargetDir:              $(TargetDir)"/>
+    <Message Text="DEBUG TargetName:             $(TargetName)"/>
+    -->
   </Target>
-  -->
-  <PropertyGroup>
-    <PostBuildEvent>mkdir "$(SolutionDir)mods/ra/"
-copy "$(TargetPath)" "$(SolutionDir)mods/ra/"
-cd "$(SolutionDir)"</PostBuildEvent>
-  </PropertyGroup>
-</Project>
\ No newline at end of file
+</Project>