diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig
index 49161035b49d8d447efa5cd97c58529a0e9729fc..a6ce01442dafb2edb1c23bafd8e4599c6749ddf9 100644
--- a/lib/std/Thread.zig
+++ b/lib/std/Thread.zig
@@ -1376,7 +1376,7 @@ const LinuxThreadImpl = struct {
                     \\  mov %%g1, %%o0 // ptr
                     \\  mov %%g2, %%o1 // len
                     \\  mov 73, %%g1 // SYS_munmap
-                    \\  t 0x3 # ST_FLUSH_WINDOWS
+                    \\  t 0x3 // ST_FLUSH_WINDOWS
                     \\  t 0x10
                     \\  mov 1, %%g1 // SYS_exit
                     \\  mov 0, %%o0