diff --git a/runtime/bin/BUILD.gn b/runtime/bin/BUILD.gn
index 1bc82252087..68e983b4902 100644
--- a/runtime/bin/BUILD.gn
+++ b/runtime/bin/BUILD.gn
@@ -1084,6 +1084,8 @@ if (defined(is_linux) && is_linux && defined(is_asan) && is_asan &&
     extra_sources = [
       "../vm/libfuzzer/dart_libfuzzer.cc",
       "builtin.cc",
+      "dartdev_isolate.cc",
+      "dartdev_isolate.h",
       "dfe.cc",
       "dfe.h",
     ]