diff --git a/RehauSku.Assist.csproj b/RehauSku.Assist.csproj
index 1e5c81a..5fd5051 100644
--- a/RehauSku.Assist.csproj
+++ b/RehauSku.Assist.csproj
@@ -101,9 +101,9 @@
     <Compile Include="Source\Assistant\HttpClientUtil.cs" />
     <Compile Include="Source\Assistant\StoreResponse.cs" />
     <Compile Include="Source\DataExport\DataWriter.cs" />
-    <Compile Include="Source\ExcelDNA\AddIn.cs" />
+    <Compile Include="Source\AddIn\AddIn.cs" />
     <Compile Include="Source\Assistant\IProduct.cs" />
-    <Compile Include="Source\ExcelDNA\Functions.cs" />
+    <Compile Include="Source\AddIn\Functions.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Source\Assistant\SkuAssist.cs" />
   </ItemGroup>
diff --git a/Source/ExcelDNA/AddIn.cs b/Source/AddIn/AddIn.cs
similarity index 100%
rename from Source/ExcelDNA/AddIn.cs
rename to Source/AddIn/AddIn.cs
diff --git a/Source/ExcelDNA/Functions.cs b/Source/AddIn/Functions.cs
similarity index 100%
rename from Source/ExcelDNA/Functions.cs
rename to Source/AddIn/Functions.cs