diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index f26a851a60..115c1325ae 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -5513,6 +5513,7 @@ pub const PERF = struct {
         RAW,
         BREAKPOINT,
         MAX,
+        _,
     };
 
     pub const COUNT = struct {