diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index a0ea080..2361acf 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -119,6 +119,7 @@
 
 config NIOS2_CMDLINE_IGNORE_DTB
 	bool "Ignore kernel command string from DTB"
+	depends on CMDLINE_BOOL
 	depends on !CMDLINE_FORCE
 	default y
 	help