diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index f549b8cd25010c74fd3dbdfe054ec81e410ab1cc..5fd218430b19a9e1b91fc17c6f75d4650cf40142 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -59,7 +59,7 @@ config 32BIT
 
 config PMB
 	bool "Support 32-bit physical addressing through PMB"
-	depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
+	depends on MMU && EXPERIMENTAL && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)
 	select 32BIT
 	default y
 	help