diff --git a/utilities/persistent_cache/hash_table_bench.cc b/utilities/persistent_cache/hash_table_bench.cc
index f761ebe0d..a46b649f1 100644
--- a/utilities/persistent_cache/hash_table_bench.cc
+++ b/utilities/persistent_cache/hash_table_bench.cc
@@ -272,9 +272,9 @@ class GranularLockImpl : public HashTableImpl<size_t, string> {
 // main
 //
 int main(int argc, char** argv) {
-  google::SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
+  GFLAGS::SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
                           " [OPTIONS]...");
-  google::ParseCommandLineFlags(&argc, &argv, false);
+  GFLAGS::ParseCommandLineFlags(&argc, &argv, false);
 
   //
   // Micro benchmark unordered_map
diff --git a/utilities/persistent_cache/persistent_cache_bench.cc b/utilities/persistent_cache/persistent_cache_bench.cc
index 38b0cd322..5b0152059 100644
--- a/utilities/persistent_cache/persistent_cache_bench.cc
+++ b/utilities/persistent_cache/persistent_cache_bench.cc
@@ -302,9 +302,9 @@ class CacheTierBenchmark {
 // main
 //
 int main(int argc, char** argv) {
-  google::SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
+  GFLAGS::SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
                           " [OPTIONS]...");
-  google::ParseCommandLineFlags(&argc, &argv, false);
+  GFLAGS::ParseCommandLineFlags(&argc, &argv, false);
 
   std::ostringstream msg;
   msg << "Config" << std::endl