diff --git a/test/vs2017/etl.vcxproj b/test/vs2017/etl.vcxproj
index d7b2c1dd..c168f880 100644
--- a/test/vs2017/etl.vcxproj
+++ b/test/vs2017/etl.vcxproj
@@ -298,6 +298,7 @@
     <ClInclude Include="..\murmurhash3.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\src\binary.cpp" />
     <ClCompile Include="..\..\src\c\ecl_timer.c" />
     <ClCompile Include="..\..\unittest-cpp\UnitTest++\AssertException.cpp" />
     <ClCompile Include="..\..\unittest-cpp\UnitTest++\Checks.cpp" />
diff --git a/test/vs2017/etl.vcxproj.filters b/test/vs2017/etl.vcxproj.filters
index 1b3f3f85..e3895e76 100644
--- a/test/vs2017/etl.vcxproj.filters
+++ b/test/vs2017/etl.vcxproj.filters
@@ -932,6 +932,9 @@
     <ClCompile Include="..\test_c_timer_framework.cpp">
       <Filter>Source Files\ECL</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\binary.cpp">
+      <Filter>ETL\Utilities</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\Doxyfile">