diff --git a/compiler/builtins/src/std.rs b/compiler/builtins/src/std.rs
index 99498315ec..83c6205ab7 100644
--- a/compiler/builtins/src/std.rs
+++ b/compiler/builtins/src/std.rs
@@ -414,7 +414,7 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
     // startsWith : Str, Str -> Bool
     add_type(
         Symbol::STR_STARTS_WITH,
-        SolvedType::Func(vec![str_type(), str_type()], Box::new(bool_type())),
+        top_level_function(vec![str_type(), str_type()], Box::new(bool_type())),
     );
 
     // countGraphemes : Str -> Int