diff --git a/tests/helpers/scoped_file.hpp b/tests/helpers/scoped_file.hpp
index b1fa85a..fc1c30d 100644
--- a/tests/helpers/scoped_file.hpp
+++ b/tests/helpers/scoped_file.hpp
@@ -4,6 +4,8 @@
 #include <stdexcept>
 #include <string>
 
+namespace helpers {
+
 class ScopedFile {
 public:
   explicit ScopedFile(std::string fileName) : fileName_(std::move(fileName)) {}
@@ -25,3 +27,5 @@ public:
 private:
   std::string fileName_;
 };
+
+} // namespace helpers
diff --git a/tests/helpers/scoped_file_test.cpp b/tests/helpers/scoped_file_test.cpp
index efc1054..b28546f 100644
--- a/tests/helpers/scoped_file_test.cpp
+++ b/tests/helpers/scoped_file_test.cpp
@@ -8,6 +8,8 @@
 
 namespace {
 
+using namespace helpers;
+
 void testFileRemovedAfterScope() {
   const std::string fileName = "scoped_file_test.log";