diff --git a/projects/VC7.1/FlightGear.vcproj b/projects/VC7.1/FlightGear.vcproj
index d8f9e18dc..1f8c1892f 100755
--- a/projects/VC7.1/FlightGear.vcproj
+++ b/projects/VC7.1/FlightGear.vcproj
@@ -1964,6 +1964,12 @@
 			<File
 				RelativePath="..\..\src\Navaids\fixlist.hxx">
 			</File>
+			<File
+				RelativePath="..\..\src\Navaids\markerbeacon.cxx">
+			</File>
+			<File
+				RelativePath="..\..\src\Navaids\markerbeacon.hxx">
+			</File>
 			<File
 				RelativePath="..\..\src\Navaids\nav.hxx">
 			</File>