diff --git a/sys/compat/x86bios/x86bios.h b/sys/compat/x86bios/x86bios.h
index 491367de4f1..f12c800d8b3 100644
--- a/sys/compat/x86bios/x86bios.h
+++ b/sys/compat/x86bios/x86bios.h
@@ -27,7 +27,7 @@
  */
 /*
  * x86 registers were borrowed from x86emu.h x86emu_regs.h
- * for compatability.
+ * for compatibility.
  */
 
 #ifndef _X86BIOS_H_