diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine
index 2a5c7abb2896..f622c3ccafc3 100644
--- a/arch/m68k/Kconfig.machine
+++ b/arch/m68k/Kconfig.machine
@@ -184,6 +184,7 @@ config INIT_LCD
 config MEMORY_RESERVE
 	int "Memory reservation (MiB)"
 	depends on (UCSIMM || UCDIMM)
+	default 0
 	help
 	  Reserve certain memory regions on 68x328 based boards.