diff --git a/win32/VS2015/test_opus_encode.vcxproj b/win32/VS2015/test_opus_encode.vcxproj
index e5789cc9d51d0685c1d5fee1c10439a411614d33..41019c70ac3e6bda1950ae0c978d2c9039bd3b31 100644
--- a/win32/VS2015/test_opus_encode.vcxproj
+++ b/win32/VS2015/test_opus_encode.vcxproj
@@ -51,6 +51,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\tests\opus_encode_regressions.c" />
     <ClCompile Include="..\..\tests\test_opus_encode.c" />
   </ItemGroup>
   <ItemGroup>
diff --git a/win32/VS2015/test_opus_encode.vcxproj.filters b/win32/VS2015/test_opus_encode.vcxproj.filters
index 84ef4453342ccd795b5134a3f6e1728d85064ad3..4ed3bb9e71e80c37a91136569c506aa91fd42ab8 100644
--- a/win32/VS2015/test_opus_encode.vcxproj.filters
+++ b/win32/VS2015/test_opus_encode.vcxproj.filters
@@ -10,5 +10,8 @@
     <ClCompile Include="..\..\tests\test_opus_encode.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\tests\opus_encode_regressions.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file