1 files changed, 6 insertions, 1 deletions
diff --git a/app/models/packages/npm/metadatum.rb b/app/models/packages/npm/metadatum.rb
index ccbf056ec7b..2fc1c05cd48 100644
--- a/app/models/packages/npm/metadatum.rb
+++ b/app/models/packages/npm/metadatum.rb
@@ -26,6 +26,11 @@ class Packages::Npm::Metadatum < ApplicationRecord
   def ensure_package_json_size
     return if package_json.to_s.size < MAX_PACKAGE_JSON_SIZE
 
-    errors.add(:package_json, _('structure is too large'))
+    errors.add(:package_json, :too_large,
+      message: format(
+        _('structure is too large. Maximum size is %{max_size} characters'),
+        max_size: MAX_PACKAGE_JSON_SIZE
+      )
+    )
   end
 end