diff --git a/utils.cc b/utils.cc
index 05e5758..248c665 100644
--- a/utils.cc
+++ b/utils.cc
@@ -966,6 +966,8 @@
       return "TestOmahaUrl";
     case kErrorCodeSpecialFlags:
       return "kErrorCodeSpecialFlags";
+    case kErrorCodePostinstallFirmwareRONotUpdatable:
+      return "kErrorCodePostinstallFirmwareRONotUpdatable";
     // Don't add a default case to let the compiler warn about newly added
     // error codes which should be added here.
   }