diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index 8441f905..d983668 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -1791,6 +1791,9 @@
 extern const char kCrostiniUsbSupportName[];
 extern const char kCrostiniUsbSupportDescription[];
 
+extern const char kCrostiniWebUIInstallerName[];
+extern const char kCrostiniWebUIInstallerDescription[];
+
 extern const char kCrosVmCupsProxyName[];
 extern const char kCrosVmCupsProxyDescription[];