diff --git a/openttd_vs80.vcproj b/openttd_vs80.vcproj
index 0998558fc1..77e91ecffe 100644
--- a/openttd_vs80.vcproj
+++ b/openttd_vs80.vcproj
@@ -591,6 +591,14 @@
 						CompileAs="2"
 					/>
 				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						CompileAs="2"
+					/>
+				</FileConfiguration>
 				<FileConfiguration
 					Name="Debug|Win32"
 					>
@@ -599,6 +607,14 @@
 						CompileAs="2"
 					/>
 				</FileConfiguration>
+				<FileConfiguration
+					Name="Debug|x64"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						CompileAs="2"
+					/>
+				</FileConfiguration>
 			</File>
 			<File
 				RelativePath=".\landscape.c"