diff --git a/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj b/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj
index 25bf26bf7..717bcd9e8 100644
--- a/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj
+++ b/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj
@@ -819,6 +819,10 @@
 		<Filter
 			Name="Utilities"
 			>
+			<File
+				RelativePath="..\..\src\aegisub_endian.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\src\aegisublocale.cpp"
 				>