diff --git a/key_file_store_unittest.cc b/key_file_store_unittest.cc
index 834b942..598543c 100644
--- a/key_file_store_unittest.cc
+++ b/key_file_store_unittest.cc
@@ -13,6 +13,7 @@
 
 #include "shill/key_value_store.h"
 
+using base::FilePath;
 using file_util::FileEnumerator;
 using std::set;
 using std::string;