diff --git a/src/xpdev/xpdev.vcxproj b/src/xpdev/xpdev.vcxproj
index 882e3da4bfefbb2eb5384284a9857a94b4928fae..52b7e9bd047752c89bbd5dea338a8042ebe643d1 100644
--- a/src/xpdev/xpdev.vcxproj
+++ b/src/xpdev/xpdev.vcxproj
@@ -175,6 +175,7 @@
       <PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <ClCompile Include="unicode.c" />
+    <ClCompile Include="xpbeep.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 e8588591ff76b08d39881b5b2668de97d126daf6..740e2f304e9e684e21cda5adf0c561dbe30288f2 100644
--- a/src/xpdev/xpdev_mt.vcxproj
+++ b/src/xpdev/xpdev_mt.vcxproj
@@ -196,6 +196,7 @@
       <PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <ClCompile Include="unicode.c" />
+    <ClCompile Include="xpbeep.c" />
     <ClCompile Include="xpmap.c" />
     <ClCompile Include="xp_dl.c">
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>