diff --git a/VisualC/SDL/SDL.vcproj b/VisualC/SDL/SDL.vcproj
index f05b872e4..7a7236532 100644
--- a/VisualC/SDL/SDL.vcproj
+++ b/VisualC/SDL/SDL.vcproj
@@ -412,6 +412,14 @@
 			RelativePath="..\..\src\SDL.c"
 			>
 		</File>
+		<File
+			RelativePath="..\..\src\video\SDL_alphamult.c"
+			>
+		</File>
+		<File
+			RelativePath="..\..\src\video\SDL_alphamult.h"
+			>
+		</File>
 		<File
 			RelativePath="..\..\src\audio\SDL_audio.c"
 			>