1 files changed, 5 insertions, 1 deletions
diff --git a/extractor/features/is_source_target_singleton_test.cc b/extractor/features/is_source_target_singleton_test.cc
index a51f77c9..929635b0 100644
--- a/extractor/features/is_source_target_singleton_test.cc
+++ b/extractor/features/is_source_target_singleton_test.cc
@@ -8,6 +8,8 @@
 using namespace std;
 using namespace ::testing;
 
+namespace extractor {
+namespace features {
 namespace {
 
 class IsSourceTargetSingletonTest : public Test {
@@ -32,4 +34,6 @@ TEST_F(IsSourceTargetSingletonTest, TestScore) {
   EXPECT_EQ(1, feature->Score(context));
 }
 
-}  // namespace
+} // namespace
+} // namespace features
+} // namespace extractor