diff --git a/src/ZeroMQ.AcceptanceTests/ZeroMQ.AcceptanceTests.csproj b/src/ZeroMQ.AcceptanceTests/ZeroMQ.AcceptanceTests.csproj
index 9c33ff8..d1f98af 100644
--- a/src/ZeroMQ.AcceptanceTests/ZeroMQ.AcceptanceTests.csproj
+++ b/src/ZeroMQ.AcceptanceTests/ZeroMQ.AcceptanceTests.csproj
@@ -127,7 +127,7 @@
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
-    <PostBuildEvent>xcopy /y /c $(SolutionDir)..\lib\$(PlatformName)\libzmq.dll $(TargetDir)</PostBuildEvent>
+    <PostBuildEvent>xcopy /y /c "$(SolutionDir)..\lib\$(PlatformName)\libzmq.dll" "$(TargetDir)"</PostBuildEvent>
   </PropertyGroup>
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/src/ZeroMQ.Perf.LatLocal/ZeroMQ.Perf.LatLocal.csproj b/src/ZeroMQ.Perf.LatLocal/ZeroMQ.Perf.LatLocal.csproj
index affc350..fb38364 100644
--- a/src/ZeroMQ.Perf.LatLocal/ZeroMQ.Perf.LatLocal.csproj
+++ b/src/ZeroMQ.Perf.LatLocal/ZeroMQ.Perf.LatLocal.csproj
@@ -67,7 +67,7 @@
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
-    <PostBuildEvent>xcopy /y /c $(SolutionDir)..\lib\$(PlatformName)\libzmq.dll $(TargetDir)</PostBuildEvent>
+    <PostBuildEvent>xcopy /y /c "$(SolutionDir)..\lib\$(PlatformName)\libzmq.dll" "$(TargetDir)"</PostBuildEvent>
   </PropertyGroup>
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/src/ZeroMQ.SimpleTests/ZeroMQ.SimpleTests.csproj b/src/ZeroMQ.SimpleTests/ZeroMQ.SimpleTests.csproj
index 10a1a0d..d3270d3 100644
--- a/src/ZeroMQ.SimpleTests/ZeroMQ.SimpleTests.csproj
+++ b/src/ZeroMQ.SimpleTests/ZeroMQ.SimpleTests.csproj
@@ -107,7 +107,7 @@
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
-    <PostBuildEvent>xcopy /y /c $(SolutionDir)..\lib\$(PlatformName)\libzmq.dll $(TargetDir)</PostBuildEvent>
+    <PostBuildEvent>xcopy /y /c "$(SolutionDir)..\lib\$(PlatformName)\libzmq.dll" "$(TargetDir)"</PostBuildEvent>
   </PropertyGroup>
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.