diff --git a/packages/editor/src/store/defaults.js b/packages/editor/src/store/defaults.js
index e4f86b3a7dfb21..a1797c41e2c99a 100644
--- a/packages/editor/src/store/defaults.js
+++ b/packages/editor/src/store/defaults.js
@@ -27,7 +27,9 @@ export const EDITOR_SETTINGS_DEFAULTS = {
 
 	richEditingEnabled: true,
 	codeEditingEnabled: true,
-	fontLibraryEnabled: true,
+	// Whilst the Font Library PHP code is the process of being merge to Core,
+	// we need to disable it for non-Plugin envionrments.
+	fontLibraryEnabled: process.env.IS_GUTENBERG_PLUGIN ? true : false,
 	enableCustomFields: undefined,
 	defaultRenderingMode: 'post-only',
 };