diff --git a/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp b/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp
index 71f5e45..6328ff9 100644
--- a/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp
+++ b/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp
@@ -29,6 +29,8 @@
     (void) std::launder((const          void *) nullptr);
     (void) std::launder((      volatile void *) nullptr);
     (void) std::launder((const volatile void *) nullptr);  // expected-error-re@new:* 4 {{static_assert failed{{.*}} "can't launder cv-void"}}
+    // expected-error@new:* 4 {{void pointer argument to '__builtin_launder' is not allowed}}
 
     (void) std::launder(foo);                              // expected-error-re@new:* 1 {{static_assert failed{{.*}} "can't launder functions"}}
+    // expected-error@new:* {{function pointer argument to '__builtin_launder' is not allowed}}
 }