diff --git a/std/os.zig b/std/os.zig
index 0912b7a2c5a705fbd0ad2851022f5ee08e7e21a8..3276ac2b1d17475419d55dbe27b2e3fe22a7674e 100644
--- a/std/os.zig
+++ b/std/os.zig
@@ -245,6 +245,9 @@ pub fn exit(status: u8) noreturn {
         Os.windows => {
             windows.ExitProcess(status);
         },
+        Os.wasi => {
+            wasi.proc_exit(status);
+        },
         else => @compileError("Unsupported OS"),
     }
 }