diff --git a/src/syncterm/SyncTERM.vcxproj b/src/syncterm/SyncTERM.vcxproj
index 3ed8cc522eecb6319c520be7845dd5ce386394b6..a58f9a3d0b6aa4c861e745b2156e448525ae2201 100644
--- a/src/syncterm/SyncTERM.vcxproj
+++ b/src/syncterm/SyncTERM.vcxproj
@@ -131,6 +131,7 @@
     <ClCompile Include="ssh.c" />
     <ClCompile Include="st_crypt.c" />
     <ClCompile Include="syncterm.c" />
+    <ClCompile Include="telnets.c" />
     <ClCompile Include="telnet_io.c" />
     <ClCompile Include="term.c" />
     <ClCompile Include="uifcinit.c" />