diff --git a/omaha_request_params.cc b/omaha_request_params.cc
index 3733f10..e240c86 100644
--- a/omaha_request_params.cc
+++ b/omaha_request_params.cc
@@ -147,7 +147,7 @@
     // TODO(adlr): make sure files checked are owned as root (and all their
     // parents are recursively, too).
     string file_data;
-    if (!utils::ReadFileToString(root_ + *it, &file_data))
+    if (!utils::ReadFile(root_ + *it, &file_data))
       continue;
 
     map<string, string> data = simple_key_value_store::ParseString(file_data);