diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index 1d59e2a..7fc72d1 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -288,6 +288,8 @@
 extern int agp_off;
 extern int agp_try_unsupported_boot;
 
+long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+
 /* Chipset independant registers (from AGP Spec) */
 #define AGP_APBASE	0x10