diff --git a/lib/std/special/start.zig b/lib/std/special/start.zig
index c483fda756e2c117a3b2282fc497a25b6f83f026..a93b01c29006e458a7de20bf79970d28aec02210 100644
--- a/lib/std/special/start.zig
+++ b/lib/std/special/start.zig
@@ -128,7 +128,7 @@ nakedcc fn _start() noreturn {
     @noInlineCall(posixCallMainAndExit);
 }
 
-extern fn WinMainCRTStartup() noreturn {
+stdcallcc fn WinMainCRTStartup() noreturn {
     @setAlignStack(16);
     if (!builtin.single_threaded) {
         _ = @import("start_windows_tls.zig");