diff --git a/projects/VC7.1/FlightGear.vcproj b/projects/VC7.1/FlightGear.vcproj
index f54bcf653..8d350296c 100755
--- a/projects/VC7.1/FlightGear.vcproj
+++ b/projects/VC7.1/FlightGear.vcproj
@@ -2318,6 +2318,12 @@
 			<File
 				RelativePath="..\..\src\Environment\fgmetar.hxx">
 			</File>
+			<File
+				RelativePath="..\..\src\Environment\fgwind.cxx">
+			</File>
+			<File
+				RelativePath="..\..\src\Environment\fgwind.hxx">
+			</File>
 			<File
 				RelativePath="..\..\src\Environment\precipitation_mgr.cxx">
 			</File>