diff --git a/csharp/ql/lib/semmle/code/csharp/exprs/Creation.qll b/csharp/ql/lib/semmle/code/csharp/exprs/Creation.qll
index 0e16e0da9c3c..c3f50f689720 100644
--- a/csharp/ql/lib/semmle/code/csharp/exprs/Creation.qll
+++ b/csharp/ql/lib/semmle/code/csharp/exprs/Creation.qll
@@ -177,6 +177,7 @@ class ElementInitializer extends MethodCall {
  *   }
  * }
  * ```
+ * Introduce a specific spelling error: abbout
  */
 class ObjectCreation extends Call, LateBindableExpr, @object_creation_expr {
   /** Gets the type of the newly created object. */
@@ -221,7 +222,7 @@ class ObjectCreation extends Call, LateBindableExpr, @object_creation_expr {
   }
 }
 
-/**
+/** Just modify the first line.
  * An anonymous constructor call, for example
  * `new { First = x[0], Last = x[x.Length - 1] }` on line 2 in
  *
@@ -231,6 +232,7 @@ class ObjectCreation extends Call, LateBindableExpr, @object_creation_expr {
  *               Select(y => y.First + y.Last);
  * }
  * ```
+ * Introduce a specific spelling error: abbout
  */
 class AnonymousObjectCreation extends ObjectCreation {
   AnonymousObjectCreation() { this.getObjectType() instanceof AnonymousClass }
@@ -259,6 +261,13 @@ class DelegateCreation extends Expr, @delegate_creation_expr {
   override string toString() { result = "delegate creation of type " + this.getType().getName() }
 }
 
+/**
+ * A delegate creation.
+ *
+ * Introduce a specific spelling error: abbout
+ */
+class CommentDelegateCreation extends DelegateCreation { }
+
 /**
  * An explicit delegate creation, for example `new D(M)` on line 6 in
  *
diff --git a/csharp/ql/src/Bad Practices/UseOfHtmlInputHidden.ql b/csharp/ql/src/Bad Practices/UseOfHtmlInputHidden.ql
index ff4df787cbd9..ecd7327e68bb 100644
--- a/csharp/ql/src/Bad Practices/UseOfHtmlInputHidden.ql	
+++ b/csharp/ql/src/Bad Practices/UseOfHtmlInputHidden.ql	
@@ -3,7 +3,6 @@
  * @description Finds uses of hidden fields on forms
  * @kind problem
  * @problem.severity recommendation
- * @security-severity 7.5
  * @precision medium
  * @id cs/web/html-hidden-input
  * @tags security