diff --git a/util.h b/util.h
index 43b1376..d13a032 100644
--- a/util.h
+++ b/util.h
@@ -25,4 +25,5 @@
 socklen_t sockaddrSize(const sockaddr_storage& ss);
 
 // TODO: getExperimentFlagString
+// TODO: Migrate it to DnsResolverExperiments.cpp
 int getExperimentFlagInt(const std::string& flagName, int defaultValue);