diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig
index 473aa308f242cf1d24dc7b66d4e237fec6b7d03a..b975daee75af365f87915bdaf1bc81be56ad5839 100644
--- a/lib/std/Thread.zig
+++ b/lib/std/Thread.zig
@@ -1309,7 +1309,7 @@ const LinuxThreadImpl = struct {
                     \\ l.ori r11, r0, 215 # SYS_munmap
                     \\ l.sys 1
                     \\ l.ori r11, r0, 93 # SYS_exit
-                    \\ l.ori r3, r0, r0
+                    \\ l.ori r3, r0, 0
                     \\ l.sys 1
                     :
                     : [ptr] "{r3}" (@intFromPtr(self.mapped.ptr)),