diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index a086dd34f932f1bd8946c3abdce1af1aedb52771..4f501e4842ab391d72a49edc6ebf10e3d13930fa 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -125,7 +125,7 @@ config AGP_HP_ZX1
 
 config AGP_PARISC
 	tristate "HP Quicksilver AGP support"
-	depends on AGP && PARISC && 64BIT
+	depends on AGP && PARISC && 64BIT && IOMMU_SBA
 	help
 	  This option gives you AGP GART support for the HP Quicksilver
 	  AGP bus adapter on HP PA-RISC machines (Ok, just on the C8000