1 files changed, 1 insertions, 0 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 7f7a6dc003..255bef990d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1384,6 +1384,7 @@ if (skia_enable_tools) {
       "experimental/sksg/SkSGNode.cpp",
       "experimental/sksg/SkSGPaintNode.cpp",
       "experimental/sksg/SkSGRenderNode.cpp",
+      "experimental/sksg/effects/SkSGMaskEffect.cpp",
       "experimental/sksg/effects/SkSGOpacityEffect.cpp",
       "experimental/sksg/effects/SkSGTransform.cpp",
       "experimental/sksg/geometry/SkSGMerge.cpp",