diff --git a/common/prefs.cc b/common/prefs.cc
index 7183861..194bbd8 100644
--- a/common/prefs.cc
+++ b/common/prefs.cc
@@ -54,7 +54,7 @@
 }
 
 bool PrefsBase::SetInt64(const string& key, const int64_t value) {
-  return SetString(key, base::Int64ToString(value));
+  return SetString(key, base::NumberToString(value));
 }
 
 bool PrefsBase::GetBoolean(const string& key, bool* value) const {