diff --git a/src/device_registration_info.cc b/src/device_registration_info.cc
index 195895f..b7ff589 100644
--- a/src/device_registration_info.cc
+++ b/src/device_registration_info.cc
@@ -39,7 +39,6 @@
 namespace {
 
 const int kPollingPeriodSeconds = 7;
-const int kBackupPollingPeriodMinutes = 30;
 
 namespace fetch_reason {