diff --git a/WordPress/Classes/ViewRelated/Gutenberg/GutenbergViewController.swift b/WordPress/Classes/ViewRelated/Gutenberg/GutenbergViewController.swift
index 869730dbdddf..15c65ea60855 100644
--- a/WordPress/Classes/ViewRelated/Gutenberg/GutenbergViewController.swift
+++ b/WordPress/Classes/ViewRelated/Gutenberg/GutenbergViewController.swift
@@ -640,6 +640,8 @@ extension GutenbergViewController: GutenbergBridgeDelegate {
                 mediaType = mediaType | WPMediaType.other.rawValue
             case .any:
                 mediaType = mediaType | WPMediaType.all.rawValue
+            @unknown default:
+                fatalError()
             }
         }