diff --git a/nmap-update/nmap-update.vcxproj b/nmap-update/nmap-update.vcxproj
index 32ef7b916..600b39ec8 100755
--- a/nmap-update/nmap-update.vcxproj
+++ b/nmap-update/nmap-update.vcxproj
@@ -14,6 +14,11 @@
     <ClCompile Include="nmap-update.c" />
     <ClCompile Include="svn_auth.c" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\nbase\nbase.vcxproj">
+      <Project>{b630c8f7-3138-43e8-89ed-78742fa2ac5f}</Project>
+    </ProjectReference>
+  </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{BBF27339-C7B6-4F52-B742-897796C1F13B}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>