diff --git a/common/test_utils.h b/common/test_utils.h
index b5151f2..7be027a 100644
--- a/common/test_utils.h
+++ b/common/test_utils.h
@@ -162,13 +162,15 @@
 
 class ScopedTempFile {
  public:
-  ScopedTempFile() {
-    EXPECT_TRUE(utils::MakeTempFile("update_engine_test_temp_file.XXXXXX",
-                                    &path_,
-                                    nullptr));
+  ScopedTempFile() : ScopedTempFile("update_engine_test_temp_file.XXXXXX") {}
+
+  explicit ScopedTempFile(const std::string& pattern) {
+    EXPECT_TRUE(utils::MakeTempFile(pattern, &path_, nullptr));
     unlinker_.reset(new ScopedPathUnlinker(path_));
   }
-  const std::string& GetPath() { return path_; }
+
+  const std::string& path() { return path_; }
+
  private:
   std::string path_;
   std::unique_ptr<ScopedPathUnlinker> unlinker_;
diff --git a/common/utils_unittest.cc b/common/utils_unittest.cc
index 24468b9..f840a75 100644
--- a/common/utils_unittest.cc
+++ b/common/utils_unittest.cc
@@ -280,10 +280,10 @@
 void GetFileFormatTester(const string& expected,
                          const vector<uint8_t>& contents) {
   test_utils::ScopedTempFile file;
-  ASSERT_TRUE(utils::WriteFile(file.GetPath().c_str(),
+  ASSERT_TRUE(utils::WriteFile(file.path().c_str(),
                                reinterpret_cast<const char*>(contents.data()),
                                contents.size()));
-  EXPECT_EQ(expected, utils::GetFileFormat(file.GetPath()));
+  EXPECT_EQ(expected, utils::GetFileFormat(file.path()));
 }
 }  // namespace