diff --git a/common/constants.h b/common/constants.h
index d95a56a..23c9003 100644
--- a/common/constants.h
+++ b/common/constants.h
@@ -56,6 +56,7 @@
 extern const char kPrefsOmahaCohort[];
 extern const char kPrefsOmahaCohortHint[];
 extern const char kPrefsOmahaCohortName[];
+extern const char kPrefsOmahaEolDate[];
 extern const char kPrefsOmahaEolStatus[];
 extern const char kPrefsP2PEnabled[];
 extern const char kPrefsP2PFirstAttemptTimestamp[];