diff --git a/llvm/utils/gn/secondary/compiler-rt/lib/scudo/standalone/tests/BUILD.gn b/llvm/utils/gn/secondary/compiler-rt/lib/scudo/standalone/tests/BUILD.gn
index 4ec95eefc3e1..757871a890ff 100644
--- a/llvm/utils/gn/secondary/compiler-rt/lib/scudo/standalone/tests/BUILD.gn
+++ b/llvm/utils/gn/secondary/compiler-rt/lib/scudo/standalone/tests/BUILD.gn
@@ -17,6 +17,7 @@ unittest("ScudoUnitTest") {
     "flags_test.cpp",
     "list_test.cpp",
     "map_test.cpp",
+    "memtag_test.cpp",
     "mutex_test.cpp",
     "primary_test.cpp",
     "quarantine_test.cpp",