diff --git a/lib/std/start.zig b/lib/std/start.zig
index e6a7b7991a..e7056a69d0 100644
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@@ -37,7 +37,9 @@ comptime {
                     @export(main2, .{ .name = "main" });
                 }
             } else if (builtin.os.tag == .windows) {
-                @export(wWinMainCRTStartup2, .{ .name = "wWinMainCRTStartup" });
+                if (!@hasDecl(root, "wWinMainCRTStartup")) {
+                    @export(wWinMainCRTStartup2, .{ .name = "wWinMainCRTStartup" });
+                }
             } else if (builtin.os.tag == .wasi and @hasDecl(root, "main")) {
                 @export(wasiMain2, .{ .name = "_start" });
             } else {