diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 410d70c..c40e487 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -961,6 +961,7 @@
 
 config NSC_GPIO
 	tristate "NatSemi Base GPIO Support"
+	depends on X86_32
 	# selected by SCx200_GPIO and PC8736x_GPIO
 	# what about 2 selectors differing: m != y
 	help