diff --git a/build/VS2010/fullbench/fullbench.vcxproj b/build/VS2010/fullbench/fullbench.vcxproj
index 9986c0b51..23f696b0e 100644
--- a/build/VS2010/fullbench/fullbench.vcxproj
+++ b/build/VS2010/fullbench/fullbench.vcxproj
@@ -197,7 +197,7 @@
     <ClInclude Include="..\..\..\lib\compress\zstd_opt.h" />
     <ClInclude Include="..\..\..\lib\compress\zstd_ldm.h" />
     <ClInclude Include="..\..\..\lib\compress\zstdmt_compress.h" />
-    <ClCompile Include="..\..\..\lib\decompress\zstd_ddict.h" />
+    <ClInclude Include="..\..\..\lib\decompress\zstd_ddict.h" />
     <ClInclude Include="..\..\..\lib\legacy\zstd_legacy.h" />
     <ClInclude Include="..\..\..\programs\datagen.h" />
     <ClInclude Include="..\..\..\programs\util.h" />
diff --git a/build/VS2010/fuzzer/fuzzer.vcxproj b/build/VS2010/fuzzer/fuzzer.vcxproj
index ba8152f24..a0aba109b 100644
--- a/build/VS2010/fuzzer/fuzzer.vcxproj
+++ b/build/VS2010/fuzzer/fuzzer.vcxproj
@@ -200,7 +200,7 @@
     <ClInclude Include="..\..\..\lib\compress\zstd_opt.h" />
     <ClInclude Include="..\..\..\lib\compress\zstd_ldm.h" />
     <ClInclude Include="..\..\..\lib\compress\zstdmt_compress.h" />
-    <ClCompile Include="..\..\..\lib\decompress\zstd_ddict.h" />
+    <ClInclude Include="..\..\..\lib\decompress\zstd_ddict.h" />
     <ClInclude Include="..\..\..\lib\dictBuilder\divsufsort.h" />
     <ClInclude Include="..\..\..\lib\dictBuilder\zdict.h" />
     <ClInclude Include="..\..\..\lib\dictBuilder\cover.h" />
diff --git a/build/VS2010/libzstd-dll/libzstd-dll.vcxproj b/build/VS2010/libzstd-dll/libzstd-dll.vcxproj
index a598bb3aa..6bb42c37d 100644
--- a/build/VS2010/libzstd-dll/libzstd-dll.vcxproj
+++ b/build/VS2010/libzstd-dll/libzstd-dll.vcxproj
@@ -83,7 +83,7 @@
     <ClInclude Include="..\..\..\lib\compress\zstd_opt.h" />
     <ClInclude Include="..\..\..\lib\compress\zstd_ldm.h" />
     <ClInclude Include="..\..\..\lib\compress\zstdmt_compress.h" />
-    <ClCompile Include="..\..\..\lib\decompress\zstd_ddict.h" />
+    <ClInclude Include="..\..\..\lib\decompress\zstd_ddict.h" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="libzstd-dll.rc" />
diff --git a/build/VS2010/libzstd/libzstd.vcxproj b/build/VS2010/libzstd/libzstd.vcxproj
index b1bac7d1e..a394a4593 100644
--- a/build/VS2010/libzstd/libzstd.vcxproj
+++ b/build/VS2010/libzstd/libzstd.vcxproj
@@ -83,7 +83,7 @@
     <ClInclude Include="..\..\..\lib\compress\zstd_opt.h" />
     <ClInclude Include="..\..\..\lib\compress\zstd_ldm.h" />
     <ClInclude Include="..\..\..\lib\compress\zstdmt_compress.h" />
-    <ClCompile Include="..\..\..\lib\decompress\zstd_ddict.h" />
+    <ClInclude Include="..\..\..\lib\decompress\zstd_ddict.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{8BFD8150-94D5-4BF9-8A50-7BD9929A0850}</ProjectGuid>
diff --git a/build/VS2010/zstd/zstd.vcxproj b/build/VS2010/zstd/zstd.vcxproj
index a8f4eb9ca..6de9aaa2a 100644
--- a/build/VS2010/zstd/zstd.vcxproj
+++ b/build/VS2010/zstd/zstd.vcxproj
@@ -77,7 +77,7 @@
     <ClInclude Include="..\..\..\lib\compress\zstd_lazy.h" />
     <ClInclude Include="..\..\..\lib\compress\zstd_opt.h" />
     <ClInclude Include="..\..\..\lib\compress\zstd_ldm.h" />
-    <ClCompile Include="..\..\..\lib\decompress\zstd_ddict.h" />
+    <ClInclude Include="..\..\..\lib\decompress\zstd_ddict.h" />
     <ClInclude Include="..\..\..\lib\legacy\zstd_legacy.h" />
     <ClInclude Include="..\..\..\lib\legacy\zstd_v01.h" />
     <ClInclude Include="..\..\..\lib\legacy\zstd_v02.h" />