diff --git a/projects/openttd_vs100.vcxproj b/projects/openttd_vs100.vcxproj
index c7a4741483..a41a965034 100644
--- a/projects/openttd_vs100.vcxproj
+++ b/projects/openttd_vs100.vcxproj
@@ -664,6 +664,7 @@
     <ClInclude Include="..\src\transparency_gui.h" />
     <ClInclude Include="..\src\transport_type.h" />
     <ClInclude Include="..\src\tunnelbridge.h" />
+    <ClInclude Include="..\src\tunnel_base.h" />
     <ClInclude Include="..\src\vehicle_base.h" />
     <ClInclude Include="..\src\vehicle_func.h" />
     <ClInclude Include="..\src\vehicle_gui.h" />
@@ -905,6 +906,7 @@
     <ClCompile Include="..\src\saveload\story_sl.cpp" />
     <ClCompile Include="..\src\saveload\subsidy_sl.cpp" />
     <ClCompile Include="..\src\saveload\town_sl.cpp" />
+    <ClCompile Include="..\src\saveload\tunnel_sl.cpp" />
     <ClCompile Include="..\src\saveload\vehicle_sl.cpp" />
     <ClCompile Include="..\src\saveload\waypoint_sl.cpp" />
     <ClCompile Include="..\src\saveload\signal_sl.cpp" />
diff --git a/projects/openttd_vs100.vcxproj.filters b/projects/openttd_vs100.vcxproj.filters
index f582429c11..da71857c38 100644
--- a/projects/openttd_vs100.vcxproj.filters
+++ b/projects/openttd_vs100.vcxproj.filters
@@ -1224,6 +1224,9 @@
     <ClInclude Include="..\src\tunnelbridge.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\tunnel_base.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\vehicle_base.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -1947,6 +1950,9 @@
     <ClCompile Include="..\src\saveload\town_sl.cpp">
       <Filter>Save/Load handlers</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\saveload\tunnel_sl.cpp">
+      <Filter>Save/Load handlers</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\saveload\vehicle_sl.cpp">
       <Filter>Save/Load handlers</Filter>
     </ClCompile>
diff --git a/projects/openttd_vs140.vcxproj b/projects/openttd_vs140.vcxproj
index bcf08d55a0..6aac4792d5 100644
--- a/projects/openttd_vs140.vcxproj
+++ b/projects/openttd_vs140.vcxproj
@@ -681,6 +681,7 @@
     <ClInclude Include="..\src\transparency_gui.h" />
     <ClInclude Include="..\src\transport_type.h" />
     <ClInclude Include="..\src\tunnelbridge.h" />
+    <ClInclude Include="..\src\tunnel_base.h" />
     <ClInclude Include="..\src\vehicle_base.h" />
     <ClInclude Include="..\src\vehicle_func.h" />
     <ClInclude Include="..\src\vehicle_gui.h" />
@@ -922,6 +923,7 @@
     <ClCompile Include="..\src\saveload\story_sl.cpp" />
     <ClCompile Include="..\src\saveload\subsidy_sl.cpp" />
     <ClCompile Include="..\src\saveload\town_sl.cpp" />
+    <ClCompile Include="..\src\saveload\tunnel_sl.cpp" />
     <ClCompile Include="..\src\saveload\vehicle_sl.cpp" />
     <ClCompile Include="..\src\saveload\waypoint_sl.cpp" />
     <ClCompile Include="..\src\saveload\signal_sl.cpp" />
diff --git a/projects/openttd_vs140.vcxproj.filters b/projects/openttd_vs140.vcxproj.filters
index f582429c11..da71857c38 100644
--- a/projects/openttd_vs140.vcxproj.filters
+++ b/projects/openttd_vs140.vcxproj.filters
@@ -1224,6 +1224,9 @@
     <ClInclude Include="..\src\tunnelbridge.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\tunnel_base.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\vehicle_base.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -1947,6 +1950,9 @@
     <ClCompile Include="..\src\saveload\town_sl.cpp">
       <Filter>Save/Load handlers</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\saveload\tunnel_sl.cpp">
+      <Filter>Save/Load handlers</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\saveload\vehicle_sl.cpp">
       <Filter>Save/Load handlers</Filter>
     </ClCompile>
diff --git a/projects/openttd_vs80.vcproj b/projects/openttd_vs80.vcproj
index 313d1c20d0..230eea467c 100644
--- a/projects/openttd_vs80.vcproj
+++ b/projects/openttd_vs80.vcproj
@@ -1930,6 +1930,10 @@
 				RelativePath=".\..\src\tunnelbridge.h"
 				>
 			</File>
+			<File
+				RelativePath=".\..\src\tunnel_base.h"
+				>
+			</File>
 			<File
 				RelativePath=".\..\src\vehicle_base.h"
 				>
@@ -2914,6 +2918,10 @@
 				RelativePath=".\..\src\saveload\town_sl.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\..\src\saveload\tunnel_sl.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\..\src\saveload\vehicle_sl.cpp"
 				>
diff --git a/projects/openttd_vs90.vcproj b/projects/openttd_vs90.vcproj
index 07330f36e5..c161f47197 100644
--- a/projects/openttd_vs90.vcproj
+++ b/projects/openttd_vs90.vcproj
@@ -1927,6 +1927,10 @@
 				RelativePath=".\..\src\tunnelbridge.h"
 				>
 			</File>
+			<File
+				RelativePath=".\..\src\tunnel_base.h"
+				>
+			</File>
 			<File
 				RelativePath=".\..\src\vehicle_base.h"
 				>
@@ -2911,6 +2915,10 @@
 				RelativePath=".\..\src\saveload\town_sl.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\..\src\saveload\tunnel_sl.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\..\src\saveload\vehicle_sl.cpp"
 				>