diff --git a/powershell/ql/lib/semmle/code/powershell/ast/internal/Raw/Scope.qll b/powershell/ql/lib/semmle/code/powershell/ast/internal/Raw/Scope.qll
index 836628a15fa..98d683d096d 100644
--- a/powershell/ql/lib/semmle/code/powershell/ast/internal/Raw/Scope.qll
+++ b/powershell/ql/lib/semmle/code/powershell/ast/internal/Raw/Scope.qll
@@ -9,16 +9,6 @@ Scope scopeOf(Ast n) {
   )
 }
 
-module Parameter {
-  abstract class Scope extends Ast {
-    abstract string getLowerCaseName();
-  }
-
-  private class ParameterScope extends Scope instanceof Parameter {
-    final override string getLowerCaseName() { result = Parameter.super.getLowerCaseName() }
-  }
-}
-
 abstract private class ScopeImpl extends Ast {
   abstract Scope getOuterScopeImpl();