diff --git a/src/servers/app/drawing/Jamfile b/src/servers/app/drawing/Jamfile
index 0a3eb39109..2253c84fb3 100644
--- a/src/servers/app/drawing/Jamfile
+++ b/src/servers/app/drawing/Jamfile
@@ -12,7 +12,7 @@ UseHeaders [ FDirName $(HAIKU_TOP) src servers app drawing Painter drawing_modes
 UseHeaders [ FDirName $(HAIKU_TOP) src servers app drawing Painter font_support ] ;
 UseBuildFeatureHeaders freetype ;
 
-Includes [ FGristFiles AlphaMask.cpp DrawingEngine.cpp ]
+Includes [ FGristFiles AlphaMask.cpp AlphaMaskCache.cpp DrawingEngine.cpp ]
 	: [ BuildFeatureAttribute freetype : headers ] ;
 
 StaticLibrary libasdrawing.a :