diff --git a/file_reader.cc b/file_reader.cc
index d0021a4..fb916d3 100644
--- a/file_reader.cc
+++ b/file_reader.cc
@@ -4,6 +4,8 @@
 
 #include "shill/file_reader.h"
 
+#include <base/file_util.h>
+
 using base::FilePath;
 using std::string;