diff --git a/common/constants.h b/common/constants.h
index 248fd05..446b147 100644
--- a/common/constants.h
+++ b/common/constants.h
@@ -67,6 +67,7 @@
 extern const char kPrefsP2PFirstAttemptTimestamp[];
 extern const char kPrefsP2PNumAttempts[];
 extern const char kPrefsPayloadAttemptNumber[];
+extern const char kPrefsTestUpdateCheckIntervalTimeout[];
 extern const char kPrefsPingActive[];
 extern const char kPrefsPingLastActive[];
 extern const char kPrefsPingLastRollcall[];