diff --git a/MatterControl.Printing/MatterControl.Printing.csproj b/MatterControl.Printing/MatterControl.Printing.csproj
index d3df7e527..87606b8ac 100644
--- a/MatterControl.Printing/MatterControl.Printing.csproj
+++ b/MatterControl.Printing/MatterControl.Printing.csproj
@@ -31,6 +31,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <PlatformTarget>AnyCPU</PlatformTarget>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />