diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 1a368a40053..e562274208f 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -131,8 +131,7 @@ config XTENSA_USE_SEPARATE_IMEM
 config XTENSA_IMEM_REGION_SIZE
 	hex "DRAM region size for internal use"
 	depends on XTENSA_USE_SEPARATE_IMEM
-	range 0x2000 0x28000
-	default 0x28000
+	default 0x18000
 
 config XTENSA_IMEM_PROCFS
 	bool "Internal memory PROCFS support"