diff --git a/bios_data.S b/bios_data.S
index 9de9d8a..bb46ded 100644
--- a/bios_data.S
+++ b/bios_data.S
@@ -1,7 +1,11 @@
 
-.globl open_gba_bios_rom
+#ifndef _WIN32
+#define _open_gba_bios_rom open_gba_bios_rom
+#endif
+
+.globl _open_gba_bios_rom
 
 .data
-open_gba_bios_rom:
+_open_gba_bios_rom:
   .incbin "bios/open_gba_bios.bin"