diff --git a/ql/src/codeql_ql/ast/internal/Type.qll b/ql/src/codeql_ql/ast/internal/Type.qll
index 34327b9486e..32e1000f426 100644
--- a/ql/src/codeql_ql/ast/internal/Type.qll
+++ b/ql/src/codeql_ql/ast/internal/Type.qll
@@ -76,7 +76,7 @@ class Type extends TType {
     p2 = classPredCandidate(this, name, arity)
   }
 
-  pragma[nomagic]
+  cached
   PredicateOrBuiltin getClassPredicate(string name, int arity) {
     result = classPredCandidate(this, name, arity) and
     not getClassPredicate1(name, arity, _, result)