--- a/crates/red_knot_python_semantic/src/types/property_tests.rs
+++ b/crates/red_knot_python_semantic/src/types/property_tests.rs
@@ -27,7 +27,7 @@
 use std::sync::{Arc, Mutex, MutexGuard, OnceLock};
 
 use crate::db::tests::{setup_db, TestDb};
-use crate::symbol::{builtins_symbol, known_module_symbol};
+use crate::symbol::{builtins_symbol, known_module_symbol, Symbol};
 use crate::types::{
     BoundMethodType, CallableType, IntersectionBuilder, KnownClass, KnownInstanceType,
     SubclassOfType, TupleType, Type, UnionType,
@@ -150,10 +150,11 @@ impl Ty {
             Ty::BuiltinsFunction(name) => builtins_symbol(db, name).symbol.expect_type(),
             Ty::BuiltinsBoundMethod { class, method } => {
                 let builtins_class = builtins_symbol(db, class).symbol.expect_type();
-                let function = builtins_class
-                    .class_member(db, method.into())
-                    .symbol
-                    .expect_type();
+                let Symbol::Type(function, ..) =
+                    builtins_class.class_member(db, method.into()).symbol
+                else {
+                    panic!("no method `{method}` on class `{class}`");
+                };
 
                 create_bound_method(db, function, builtins_class)
             }