diff --git a/common/constants.h b/common/constants.h
index 897d2e2..1057a65 100644
--- a/common/constants.h
+++ b/common/constants.h
@@ -91,6 +91,7 @@
 extern const char kPrefsUpdateBootTimestampStart[];
 extern const char kPrefsUpdateTimestampStart[];
 extern const char kPrefsUrlSwitchCount[];
+extern const char kPrefsVerityWritten[];
 extern const char kPrefsWallClockScatteringWaitPeriod[];
 extern const char kPrefsWallClockStagingWaitPeriod[];