diff --git a/early-init.el b/early-init.el
index 3a61515..14440fc 100644
--- a/early-init.el
+++ b/early-init.el
@@ -71,6 +71,15 @@
 ;; Set-language-environment sets default-input-method, which is unwanted.
 (setq default-input-method nil)
 
+;; Some features that are not represented as packages can be found in
+;; `features', but this can be inconsistent. The following enforce consistency:
+(if (fboundp #'json-parse-string)
+    (push 'jansson features))
+(if (string-match-p "HARFBUZZ" system-configuration-features) ; no alternative
+    (push 'harfbuzz features))
+(if (bound-and-true-p module-file-suffix)
+    (push 'dynamic-modules features))
+
 ;;; Garbage collection
 ;; Garbage collection significantly affects startup times. This setting delays
 ;; garbage collection during startup but will be reset later.