diff --git a/engine/src/flutter/compositor/BUILD.gn b/engine/src/flutter/compositor/BUILD.gn
index be370a8b83..05a5620ee6 100644
--- a/engine/src/flutter/compositor/BUILD.gn
+++ b/engine/src/flutter/compositor/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-static_library("compositor") {
+source_set("compositor") {
   sources = [
     "layer.cc",
     "layer.h",
diff --git a/engine/src/flutter/scheduler/BUILD.gn b/engine/src/flutter/scheduler/BUILD.gn
index acb155a08e..53cb82a0f7 100644
--- a/engine/src/flutter/scheduler/BUILD.gn
+++ b/engine/src/flutter/scheduler/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-static_library("scheduler") {
+source_set("scheduler") {
   sources = [
     "scheduler.cc",
     "scheduler.h",