diff --git a/gdb/testsuite/gdb.dlang/demangle.exp b/gdb/testsuite/gdb.dlang/demangle.exp
index ebc2487fd1b..d45437c72cf 100644
--- a/gdb/testsuite/gdb.dlang/demangle.exp
+++ b/gdb/testsuite/gdb.dlang/demangle.exp
@@ -44,7 +44,7 @@ proc test_d_demangling {} {
     test_demangling "_D8demangle4testFkZv" "demangle.test(uint)"
     test_demangling "_D8demangle4testFlZv" "demangle.test(long)"
     test_demangling "_D8demangle4testFmZv" "demangle.test(ulong)"
-    test_demangling "_D8demangle4testFnZv" "demangle.test(none)"
+    test_demangling "_D8demangle4testFnZv" "demangle.test(typeof(null))"
     test_demangling "_D8demangle4testFoZv" "demangle.test(ifloat)"
     test_demangling "_D8demangle4testFpZv" "demangle.test(idouble)"
     test_demangling "_D8demangle4testFqZv" "demangle.test(cfloat)"