diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index 1cf3ae2d059..a26c85509ec 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -3479,13 +3479,13 @@ NTSTATUS WINAPI NtCreateNamedPipeFile( PHANDLE handle, ULONG access,
     data_size_t len;
     struct object_attributes *objattr;
 
+    if (!attr) return STATUS_INVALID_PARAMETER;
+
     TRACE("(%p %x %s %p %x %d %x %d %d %d %d %d %d %p)\n",
-          handle, access, debugstr_w(attr->ObjectName->Buffer), iosb, sharing, dispo,
+          handle, access, debugstr_us(attr->ObjectName), iosb, sharing, dispo,
           options, pipe_type, read_mode, completion_mode, max_inst, inbound_quota,
           outbound_quota, timeout);
 
-    if (!attr) return STATUS_INVALID_PARAMETER;
-
     /* assume we only get relative timeout */
     if (timeout->QuadPart > 0)
         FIXME("Wrong time %s\n", wine_dbgstr_longlong(timeout->QuadPart));