diff --git a/w32/Setup/Setup.wixproj b/w32/Setup/Setup.wixproj
index 6e59ed618d..56d4c99425 100644
--- a/w32/Setup/Setup.wixproj
+++ b/w32/Setup/Setup.wixproj
@@ -129,6 +129,14 @@
       <RefProjectOutputGroups>Binaries;Content;Satellites</RefProjectOutputGroups>
       <RefTargetDir>INSTALLLOCATION</RefTargetDir>
     </ProjectReference>
+    <ProjectReference Include="..\..\libs\win32\pthread\pthread.2010.vcxproj">
+      <Name>pthread</Name>
+      <Project>{df018947-0fff-4eb3-bdee-441dc81da7a4}</Project>
+      <Private>True</Private>
+      <DoNotHarvest>True</DoNotHarvest>
+      <RefProjectOutputGroups>Binaries;Content;Satellites</RefProjectOutputGroups>
+      <RefTargetDir>INSTALLLOCATION</RefTargetDir>
+    </ProjectReference>
     <ProjectReference Include="..\..\libs\win32\sphinxbase\sphinxbase.2010.vcxproj">
       <Name>sphinxbase</Name>
       <Project>{2f025ead-99bd-40f5-b2cc-f0a28cad7f2d}</Project>