diff --git a/src/xpdev/xpdev.vcxproj b/src/xpdev/xpdev.vcxproj
index e344faa820ea53d80a87a3d592fc9f801479c98e..5bb227ba20d04bfbaaee58ae04d4122810eb4a32 100644
--- a/src/xpdev/xpdev.vcxproj
+++ b/src/xpdev/xpdev.vcxproj
@@ -175,6 +175,7 @@
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
+    <ClCompile Include="unicode.c" />
     <ClCompile Include="xpmap.c" />
     <ClCompile Include="xp_dl.c">
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
diff --git a/src/xpdev/xpdev_mt.vcxproj b/src/xpdev/xpdev_mt.vcxproj
index d86dee547dd1fc32b02fa6c90c1e14702b85894b..15084ae8d1209907e7d3280f7aee668b29e1ce41 100644
--- a/src/xpdev/xpdev_mt.vcxproj
+++ b/src/xpdev/xpdev_mt.vcxproj
@@ -195,6 +195,7 @@
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
+    <ClCompile Include="unicode.c" />
     <ClCompile Include="xpmap.c" />
     <ClCompile Include="xp_dl.c">
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>