diff --git a/lib/std/os/linux/tls.zig b/lib/std/os/linux/tls.zig
index 5dbdafb60a..20c51abdfa 100644
--- a/lib/std/os/linux/tls.zig
+++ b/lib/std/os/linux/tls.zig
@@ -152,7 +152,7 @@ pub fn setThreadPointer(addr: usize) void {
                 : [addr] "r" (addr)
             );
         },
-        .arm => |arm| {
+        .arm => {
             const rc = std.os.linux.syscall1(std.os.linux.SYS_set_tls, addr);
             assert(rc == 0);
         },