diff --git a/ql/src/codeql_ruby/controlflow/internal/ControlFlowGraphImpl.qll b/ql/src/codeql_ruby/controlflow/internal/ControlFlowGraphImpl.qll
index 9a1534cad08..0d18b7e894e 100644
--- a/ql/src/codeql_ruby/controlflow/internal/ControlFlowGraphImpl.qll
+++ b/ql/src/codeql_ruby/controlflow/internal/ControlFlowGraphImpl.qll
@@ -316,8 +316,6 @@ private module Trees {
 
   private class ClassTree extends StandardPreOrderTree, Class {
     final override AstNode getChildNode(int i) { result = this.getChild(i) }
-
-    override predicate isHidden() { any() }
   }
 
   private class DoTree extends StandardPreOrderTree, Do {
@@ -547,8 +545,6 @@ private module Trees {
 
   private class ModuleTree extends StandardPreOrderTree, Module {
     final override AstNode getChildNode(int i) { result = this.getChild(i) }
-
-    override predicate isHidden() { any() }
   }
 
   private class NextTree extends StandardPostOrderTree, Next {