diff --git a/common/constants.cc b/common/constants.cc
index 4bca105..3ae7a60 100644
--- a/common/constants.cc
+++ b/common/constants.cc
@@ -37,6 +37,8 @@
 const char kPrefsDailyMetricsLastReportedAt[] =
     "daily-metrics-last-reported-at";
 const char kPrefsDeltaUpdateFailures[] = "delta-update-failures";
+const char kPrefsDynamicPartitionMetadataInitialized[] =
+    "dynamic-partition-metadata-initialized";
 const char kPrefsFullPayloadAttemptNumber[] = "full-payload-attempt-number";
 const char kPrefsInstallDateDays[] = "install-date-days";
 const char kPrefsLastActivePingDay[] = "last-active-ping-day";
diff --git a/common/constants.h b/common/constants.h
index 1057a65..61e5ddd 100644
--- a/common/constants.h
+++ b/common/constants.h
@@ -41,6 +41,7 @@
 extern const char kPrefsCurrentUrlIndex[];
 extern const char kPrefsDailyMetricsLastReportedAt[];
 extern const char kPrefsDeltaUpdateFailures[];
+extern const char kPrefsDynamicPartitionMetadataInitialized[];
 extern const char kPrefsFullPayloadAttemptNumber[];
 extern const char kPrefsInstallDateDays[];
 extern const char kPrefsLastActivePingDay[];