--- a/backup_restorer.cc
+++ b/backup_restorer.cc
@@ -48,7 +48,7 @@
   // TODO: this disables size checks for each separate message. Figure a better
   // way to do this while keeping them enabled. It seems we need to create an
   // instance of CodedInputStream for each message, but it might be expensive
-  cis.SetTotalBytesLimit( backupData.size(), -1 );
+  cis.SetTotalBytesLimit( backupData.size() );
 
   // Used when emitting chunks
   string chunk;